1) Yes, for the current setup 430W will be enough.
Then a couple of comments:
- Get a DVD burner, not sure if that is but they are like $20-25 so just make sure you have one that also writes.
- Spend some extra money on the SSD, and get one that uses SataIII.
Crucial M4 64GB, OCZ vertex 3, Corsair Force 3, OCZ agility 3
- Sadly you would currently get better performance for many cases from PhenomII x4 955 BE than the FX-4100 for the same price.