Both are fantastic boards, with excellent performance and good value for money.
Graphics card - You have already chosen a monster. IMO, the HD 5850 is the best P/P card out there in the highly enthusiast gaming section. So, no second thought about it! Though all the brands provide the same card, XFX seems to do better service in the last couple of years. So, checkout XFX,Sapphire, HIS, PowerColor too before going with Diamond!
PSU - I dont know abt Antec, but i recommend the Corsair 550VX . Its a solid product and handle your rig with nice performance!
Hey guys thanks for the suggestions. I decided to go with the the samsung DVD-R, the saphire GFX, and whitefangs cpu/mb combo. Thanks for all the suggestions. Total was 950 including shipping a bit more than I wanted to spend but figured 50 bucks for for the performance was worth it. Thanks again.