How can I air-cool this rig?-Please help

Hi, so I've decided to air cool my setup, because people are telling me to watercool it, it will take $1000 or so. Here's the rig:

Not sure what Mobo yet, but it will probably be a 780i
Quad Core Q9550 2.83ghz (Plan to OC to around 3.3-3.4, nothing too big)
Triple GTX 280 OC edition in SLI (wont need to OC, comes OC'd.)
8GB DDR2-800 or 1066 RAM
300gb velociraptor 10k rpm HDD
1250w PSU

I understand that 3 GTX 280s can bake a cake, so that's why I ask this. The case I am getting will be the biggest I can get thats not over $400, which should be huge. So basically the main question is, what kind of air cooling set up would I need to keep all of this at a good temps? Like how many fans, which one, how powerful etc. I'd like it not to cause a fire when I run crysis on the best possible settings@2560x1600(yes, these GPUs can do it, and because I know somebody will ask, http://www.guru3d.com/article/gefo [...] w-test/13)

Thanks a ton

Edit: If aircooling this is impossible, please tell me how I can watercool it and not pay ridiculous amounts of $. But I'd much, MUCH rather prefer air cooling. Noise isn't an issue, as long as it won't muffle out my surround sound.

Get the Antec 1200 case and some air coolers for the video from Arctic Cooling.
For the CPU get the Arctic cooling Freezer 7 Pro.

I just looked all over and there is NO aftermarket cooler out for the card that will allow Tri-SLI. The only Air one on the market...almost released is the Thermalright one. And it's huge and will not allow anything over two cards to be used.

So, do it with stock cooling, crank the fans up and hope they don't thermal throttle.

Or... Go water. What about just water cooling the GPU's and go big air on the CPU? Save $250?

Btw, theres also these http://www.newegg.com/Product/Prod [...] 6814130369 which look appealing, but that would mean $600 more in total, and plus, I dont think 3 can fit in a mobo...