for the mothorboard id go with asus get http://www.newegg.com/Product/Product.a ... 6813131614 this mobo is as future proof as any ive seen its ready for the i9's
(not even out yet) sata 6 and usb 3 too 
for the tower GET THE HAF 932 GOOD ROOM AMAZEING AIRFLOW looks nice
i have ocd and i can FIND SOMETHING wrong with everything but that tower case is just... i own that tower and its the best ive ever used 5/5 from me
as for memory id get something from kingston like theyre dominators or from Gskill like theyre pi series (im useing gskill)
only thing you should worry about with memory is,,, if it has large heatsinks you wont be able to fit a GOOD cpu cooler as after u add the fans usualy ur loosing a dimm or two if your useing a fan like ultra kaze (3000rpm thick one) lol the width of the fan costs you up to 3 dimms
exception would be watercooling : / but it gives me nightmares thinking it could leak id go with Ati for the graphix as they have never did me wrong and eyefinity is cool
but my friends swear by nvidia so meh go with your prefference
thats about it,,,
and a pet peeve of mine,, go high end at first and get bare minimum so you can upgrade (example: im useing 12g of pi series ram,,, but at first i bought 3 sticks then later 3 more,,, for my graphix card i bought an 5970 and in the future plan to crossfire when i can afford another)
also your gonna want a good power supply like 1000 watts i wish i had 1200
probly a fan controler as well so when your heating er up you can crank the fans up, then when your straightning your room or whutever you can turn the fans down so the towers quiet
its allot to read and my grammer is terrible but hope you got SOMETHING good from it
