I wouldn't bother with Spacebattles since you update so infrequently. Someone would inevitably necro the thread between updates, getting it locked until you contact a moderator. Having to contact a moderator to unlock the thread every time you come out with a new chapter would be annoying. I believe Sufficient Velocity lacks the thread necro rule, but AO3 is still probably your best bet.
“I really hope I’m behind this convoluted mess; at least that way I’ll be able to get revenge by doing this to myself. I won’t even have to feel bad because it’ll be all my fault.” - Harry Potter, The Master of Death by Ryuugi.