get board from gigabyte/asus, as you are planning for long usage.
also DDR3 is not bad option. check 785G boards from gigabyte/asus, their availability and price. if you buy AM3 board then you can go for DDR3 RAM, and also upgrade total RAM with better speed. As the price speculation going 785G boards are available in 7K range
DDR3 RAM, will become more and more affordable by time.
You can be future proof by choosing a proper mobo, which can give you good future upgrade options, not in proccy but in other hardwares
and go for good monitors(brand), Dell/Samsung are the best.
dell 20" is also equally priced to Samsung 2033SW, you can get 20" monitor from dell too.
color reproduction is just decent, these are not professional monitors, which will cost you hell alot. get standard resolution monitors than buying an HD monitor for your work.