I wouldn't put anything expensive into it, if that's the case.
Get the monitor now, and either put in a cheap but decent GPU in, or skip on it entirely.
It won't be real powerful to get a lesser GPU, but the concept behind this is to put the money you save towards that new system. If you go and put a powerful GPU in it now, that's less money towards your build (especially if you need a new PSU for it, which it sounds like you will), and more time waiting, so by time you do get the new build, the card you get now will likely be nearing it's end (not the end of usability, but the end of being really good and worth putting into a system that's new a year from now), and the PSU won't be as good as one you can get if you wait.
I'd say either skip on the new GPU entirely, or get one that's cheap and will work with your current PSU (something like a GeForce 8800GT/9800GT may be the limits I'd push with that PSU).
As for the monitor, if that'll be carried over, splurge now. I wouldn't go any lower than 1920x1200. Physical size isn't as important as quality.
Get the monitor now, and either put in a cheap but decent GPU in, or skip on it entirely.
It won't be real powerful to get a lesser GPU, but the concept behind this is to put the money you save towards that new system. If you go and put a powerful GPU in it now, that's less money towards your build (especially if you need a new PSU for it, which it sounds like you will), and more time waiting, so by time you do get the new build, the card you get now will likely be nearing it's end (not the end of usability, but the end of being really good and worth putting into a system that's new a year from now), and the PSU won't be as good as one you can get if you wait.
I'd say either skip on the new GPU entirely, or get one that's cheap and will work with your current PSU (something like a GeForce 8800GT/9800GT may be the limits I'd push with that PSU).
As for the monitor, if that'll be carried over, splurge now. I wouldn't go any lower than 1920x1200. Physical size isn't as important as quality.