I found an APC 42u rack for $100 in perfect condition. 78" tall and 48" deep. should be PLENTY. ill most likely just go with shelves from racksolutions and set all my stuff in there as i do not care about what the front looks like. will i have any issues with ps3, 360, wii u controllers through 1 partition wall?
Is it really 48" deep between the posts, or is that the total depth counting the typical overhanging doors for the front & back? If the posts are really that far apart then it'll be a bit of a challenge getting rails for everything, as most don't have brackets for that much depth. Most deeper racks like that have posts about 2/3 back for stuff with more limited depth. The upside is you'll have plenty of room from the back to mount other shelving and not have to worry about the cabling bumping into the stuff in front. But, as has been pointed out, it does make it challenge to get to the stuff, especially if the side panels are installed. But if you're going to put it somewhere that's got good access all around it then that sounds like a bargain.