I need someone with a Midi R2 to help me out. The clearance on my Hooker computer cabinet is only 18.25" (maybe a smidgen less). I really want this case but I'm concerned. First that it won't fit. The spec sheet says 18.11", is that with or without the feet. Is that accurate? Second, if it does slide in this spot without the feet on, is there a concern with a bottom mounted PSU (will I need to ensure the fan is facing up)? Third, is there a cooling concern assuming it can take air in the front and exhaust it out the back does the clearance on the top/bottom matter?