On Idea one: I'd stick with a more Vietnam campaign like from the comics if you want that to work.
On Idea 2: Please remember that you don't actually join Luffy D. Monkey's crew so much as conscripted... so she'd have to fulfill a role Luffy feels his crew is lacking in. I'd leave her with her powers... the setting allows it... being on Luffy's crew encourages this. So there is no reason not to leave them. Though the alternate tech thing would throw her off for a bit.
For added fun, drop a few random clones of hers into the same world ,with aging fixed so they don't tip anyone off to there lifespans. Then have them overheard (disturbing amount of identical girls in a cluster demands attention or just drop them off in/on random towns/islands). Put some booze in one or more and have them rambling drunkenly about how hot it was when Toma stopped them from being genicided... have them babble about that in a vauge manner and have her/them mention they have numbers as names as mom/progenitory/grand older sister has had over 10,000 spawn. A little cleaver wordplay and misunderstanding and its easy enough to convince people that Toma is the god that took down the devil, that the devil fruits are from. A bit more effort and Toma's null power is the power of the sea that contains devil fruit users. Basically, the convince the world at large that they are some holy race (so many of them with the same powers, immune to the salt water effect, etc...) and Accelerator is literally the devil. Not having the prime clone is bound to warp them a bit... the lack of mega-hivemind and all. In other words, a secret creation story with physcal back up that... that WG's rsponse to is panic. This will lend in even more crediblity.
Even without the clones, you can get the same plot going, electrical power, salt water has no effect, superpowerful... traveling with Robin and the Strawhats... instant old one. Having a physical old god against you is going to cause the World Government to freak.... and drop a huge bounty on some complete unknown. Also, Enil will stalk her... If she can smite him a few time in public... which he really, really deserves... it'll add credance to this idea in the public mind. Though If he sees her as a destined mate, unwanted archrival (I'm sure the parrallel with her and Toma who hit her eventually), or mortal enemy (he heard the myth and things its his job to avenge the devil, therefore accend to Accellerators old job), or just declare himself her high preist is debatable.
Then there are the snails. Those electrically power communication snails. The ones she'll be able to eventually control with her mind... which if done pre-Luffy contact could get her drafted as ship communication officer. Have her have wearing a jacket with one of those snails on it (it was cheap and warm/comfortable) and/or carry around flat metal snails (thin and sharp enough to make good electrosaw sword parts, easy to carry and cheap from a tacky souvenir shop). This will make it real easy to convince people she is responsible for those things in the first place.
On Idea 2: Please remember that you don't actually join Luffy D. Monkey's crew so much as conscripted... so she'd have to fulfill a role Luffy feels his crew is lacking in. I'd leave her with her powers... the setting allows it... being on Luffy's crew encourages this. So there is no reason not to leave them. Though the alternate tech thing would throw her off for a bit.
For added fun, drop a few random clones of hers into the same world ,with aging fixed so they don't tip anyone off to there lifespans. Then have them overheard (disturbing amount of identical girls in a cluster demands attention or just drop them off in/on random towns/islands). Put some booze in one or more and have them rambling drunkenly about how hot it was when Toma stopped them from being genicided... have them babble about that in a vauge manner and have her/them mention they have numbers as names as mom/progenitory/grand older sister has had over 10,000 spawn. A little cleaver wordplay and misunderstanding and its easy enough to convince people that Toma is the god that took down the devil, that the devil fruits are from. A bit more effort and Toma's null power is the power of the sea that contains devil fruit users. Basically, the convince the world at large that they are some holy race (so many of them with the same powers, immune to the salt water effect, etc...) and Accelerator is literally the devil. Not having the prime clone is bound to warp them a bit... the lack of mega-hivemind and all. In other words, a secret creation story with physcal back up that... that WG's rsponse to is panic. This will lend in even more crediblity.
Even without the clones, you can get the same plot going, electrical power, salt water has no effect, superpowerful... traveling with Robin and the Strawhats... instant old one. Having a physical old god against you is going to cause the World Government to freak.... and drop a huge bounty on some complete unknown. Also, Enil will stalk her... If she can smite him a few time in public... which he really, really deserves... it'll add credance to this idea in the public mind. Though If he sees her as a destined mate, unwanted archrival (I'm sure the parrallel with her and Toma who hit her eventually), or mortal enemy (he heard the myth and things its his job to avenge the devil, therefore accend to Accellerators old job), or just declare himself her high preist is debatable.
Then there are the snails. Those electrically power communication snails. The ones she'll be able to eventually control with her mind... which if done pre-Luffy contact could get her drafted as ship communication officer. Have her have wearing a jacket with one of those snails on it (it was cheap and warm/comfortable) and/or carry around flat metal snails (thin and sharp enough to make good electrosaw sword parts, easy to carry and cheap from a tacky souvenir shop). This will make it real easy to convince people she is responsible for those things in the first place.