This wouldn't be a horrible start. Galaxy card though? Meh. I do love the 570gtx but I don't recommend that manufacturer at all.
As for harddrives I would go with whatever the current best SSD is in your size range whether that be ~64gb, ~128, ~256, etc. Look at benchmarks and read reviews, then make an intelligent decision. And get one of the giant platter drives to keep all of your junk like music and movies on as to not clutter your OS drive. Get multiple ones and RAID them together if you like.
I can't really answer much more without knowing what you want. This thread is literally 100% useless without a clear budget. And you will most likely just be wasting the time of anyone trying to help you without a known budget.
I guess the only real tip I can give you is that computers as a general rule are like bottlenecks. They will only be as "fast" (hate using this word) as the worst component inside being used for whatever task you want it to do.