Back away from the P180.
I went through hell with my P180's parts constantly falling apart. I've been through six front doors, multiple side panels, a spoiler, and one of the screw holes on the back is drilled too high. In fact, the past two doors which have been shipped to me by Antec's customer support arrived already busted. I got so tired of my P180's parts coming apart or breaking that I ordered a Lian Li PC-7b Plus II from Performance PCs. Now, I've got to wait and see if Antec can actually ship me a replacement door that closes properly and a pair of side panels that aren't coming apart; I may just end up selling the P180 for $40 or so once I get suitable parts for it since I wouldn't really feel honest selling it for anywhere near its retail price.
Save yourself some trouble and go with a case that'll really last you.