hey Kubes,the main use of the computer will be games,and general use (I'm pretty heavy on multitasking though).
I've opted for the 902 because it's not that much pricyer where I live (newer=better right? ;-) ).
I'm not a SLI\CF fan,as I think it's a waist of money.so no need for a different PSU.
I don't know the price you are planning on getting the antec 902 but @ newegg its $160 where the 900 is only $110. My personal opipion is it is not worth the $50 preium for it. Your call though. Could maybe put that extra $50 bucks towards a gtx280/gtx285.
Other than that one key concern I really don't have much else to say about your build.
I stand behind the idea that the case isn't even worth the extra 25 bucks. If your buying it for cosmetic reasons that's fine, but for preformance wise there's no real different between the 900 and 902. Unless your buying it for cosmetic reasons and due to you being on a tight budget there's really no point in the 902.