Yeah, get different memory, I took advantage of the lower price it had before (it was $90) when i ordered mine. I would get the patriot or something for half the current price. For the hd, consider the:
not for size, but for speed. I just ordered this because of all the great reviews. It was way more space than i needed. Heck i was considering a 160 gb drive, but couldnt pass this one up. Also, Directron has it for like $5 less.
That mobo is discontinued i think. Try to find it on the asus website. lol. They still are supporting their x38 version though. weird. I went with gigabyte ga-x48-ds4 great reviews on this.
Look back over the posts of the last week or so on this board, there are a lot of good discussions of builds in this price range.