So... what with the FFML now gone...

[classicdrogn]

I believe TTH may have tightened up on non-BtVS stuff from author comments on some things I read there recently, but didn't investigate further. The SB family sites are probably not a good fit given chapter sizes and the time between each one. I would vote for AO3 if it's not too onerous to get set up, which along with being relatively sane and author friendly from what I understand, also has the virtue of working with Calibre/FanFicFare for easy ereader support. (And has direct epub format download buttons on each story page for that matter last I checked, but using FFF makes keeping your local copy up to date so very much easier.)