I think right now the hi-res textures and all that are gonna stay out, I figure if we just get the voices packed in there it'll be enough.
The cap she gave me initially was 250MB. The file's closer to 220- and most of that's movie- some 160MB for the three, according to the copy I kept here. The voice VP file is 169MB. If we compress the movies by about 80% (about what I get from MPEG-4 compression, though sound might affect that- in which case we can still shrink 'em down a bit by reducing the resolution somewhat), and put in stripped-down versions of the sound effects... hell, I'm no mathematician, but it'll be within a close shave of 250MB.
If you want, we can then offer an addon pack of all the nonessential stuff- the hires texes, animated techroom, and some toys that work with the SCP modifications but naturally don't get face time in the original campaign- which UD will probably be happy to link to, and which can be hosted relatively painlessly from here. Most of that stuff is optional- you don't lose any of the atmosphere of FreeSpace by not having it, even though it's nice. Same can't necessarily be said of the movies and voices (do you really want to deprive everyone of the experience of falling out of their seat in In the Lion's Den?), so I want to get those in.