Poser is (still) a disaster when it comes to ram usage etc. So don't count it.
Photoshop prefers to have its scratch file on a second hard disk, so get two.

Best data for Cinema can be found on Mash' site:
http://forum.3dfluff.com/forumdisplay.php?f=12

he knows what he talks about when it comes to cinema.

fireGL, quadro and wildcat are only good for dedicated apps (maya) and cad work (autocad,...) not for cinema.