What works best with the 9800 video card? A 19" monitor or a 22"?
I'm used to an old 17" so size dosnt really mather.. ^^
The biggest the screen = best graphics?
Bigger screen doesn't mean better. The higher the resolution the more powerful video card you'll need. I think the 9800GT will be decent for a 22" (1680x1050) though if you got a 19" widescreen it's only 1440x900 so games will run better and on higher settings. If you got a square 19" screen it would be 1280x1024 and still run a bit better.
As per waiting, your at the hands of the Canadian economy so I don't know. If you had bought a few months ago you could of gotten something much better, but since our dollar has dropped, prices increased exponentially in no time at all. It'll take months for prices to drop if our dollar regains again.
With my list, I'd recommend an aftermarket heatsink if you can budget it in. Something like Xigmatek's heatpipe direct touch ones or the OCZ Vendetta 2. Then you could overclock that E7200 for some free performance gains and I'm sure you could clock the 9800GT some too with stock cooling for further gains.