New Comp + Star Wars

[amins]

So, been doing some research... things aren't cheap! lol

1) Intel® Core™ i7-3820 (Quad Core, 10MB Cache) Overclocked up to 4.1GHz
- this ok or are we kinda at a point where everything forward is going to be: Intel® Core™ i7-3930K (Six Core, 12MB Cache,Overclocked up to 4.1Ghz) "
- I really dont' know what the difference is outside of having anoher pairing of processors....

2) 8GB Quad Channel DDR3 at 1600MHz
- vs the 16GB? Do i really need 16?

3) 1.25GB GDDR5 NVIDIA® GeForce® GTX 560 Ti
- Seems ok? I saw what you were talking about on the duel vid's...
- The other card I was looking at is: 1GB GDDR5 NVIDIA® GeForce® GTX 555 - NVIDIA SLI® Enabled... Not sure what excatly the SLI Enabled does...

4) 1TB SATA 6Gb/s (7,200RPM) 32MB
- this is what i was looking at, but then saw the post about SSD's?... jump'n up to a 512GB SSD 6Gb/s MAIN + 1TB 7200RPM Storage, is EXPENSIVE (only $150 ish cheaper if you knock off the +1TB exta storage). So, question is, how long is soemthing like this going to last?

* I dont' mind spending the money if i'm going to get 5-7yrs out of it, like i did on my current computer. Price of computers have shot way up in the last 7 yrs... i think i spent maybe 1500 back then and came out w/ a really nice computer for gaming... but now, it seems like $2,500 is the going rate... UGH :?