I think it is good as is.
Samsung cut the warranty on their F3 to a miserable one year. That's not confidence-inspiring. The WD Black has a five year warranty; possibly the only [non-enterprise] drive that does.
The Neo-Eco is Seasonic-built. I don't think they know how to build a bad PSU. The BP-550 has reviewed well, but it is not better.
The GTX660 is a slightly better performer in today's games, but it has crippled compute performance, which may matter tomorrow, or for any other GPGPU tasks you may have (like bitcoin mining, if you're at all interested). If you think you might want something stronger, get a HD7870.
If you think you might overclock, get a $20 Xigmatek Gaia. It is up to 6db quieter than Crappermaster's similar models, cools better than the Hyper 212+, and is within a degree of the Hyper 212 Evo (this according to Frostytech.com); and it's cheaper.
Edit: Hmmm, I did notice the wireless card is only b/g, not n. Get a wireless n card; it's faster. Even if your current router only does g, it's cheap future-resistance.