Wait for the GTX260 as well, wait for prices to drop if you can, but don't go with 9800GTX, try and find an 8800GTX, 8800GTX generally outperforms 9800GTX, depends on some cards though, look up the benchmarks
^... hmmmmnnn if you aren't overclocking then Q9450 is a good buy... but then if you aren't overclocking X48 is a waste of money ... you should get P35... that would serve your purpose very well and save a lot of money.
anyhow the 4870 is going to be $320 and 4850 will be $200. Since you have chosen crossfire mobo, 4850 CF would probably be the sweet spot.
since you don't live in US there would surely be overpriced hardware there ... so you should def cut costs with P35. Other options are hard to rate at this point ... it would be best to rate everything when we get to know how the 4870 and 4850 perform.