That case is a good choice- I went with the
Storm Scout, and I haven't regretted it. I'd prefer that one, but I think the differences between the two are a personal choice.
If you want to be able to run everything for a while, I'd recommend upgrading from the HD7770. It's a solid choice, but it's the bare minimum with the latest architecture (a couple of good reviews
here and
here). I'd recommend spending the extra if you can and going with the
7870 (
comparison). I speak from experience, because I was in the same boat a couple of years ago with a $150 range card vs a $250 range card. I'm still running it, but I'm finding it just adequate after 2 years (
my cards and comparisons)
The extra $100 would have pushed my rig up a bit in price. But now I wonder if I'd be more satisfied now with that expenditure earlier.
Moving on, I totally agree on the wireless with everyone else. I had the same concerns- and I'd give you a bit from what I learned there also; unless your computer is far away from your router, I'd look at wired. even if it is far away, I'd still look at wired, and power over ethernet. Both of those have served me a lot better than wireless.
The power supply and memory- I think Carol has that covered, and I'd totally agree with her assessments personally. And her last statements on price are right on, also.