Hello all, working on a new build and would like some advice.
I built my last PC in Jan, 2007, and it's been a trooper and is still running (only upgrade I've done is add some RAM), but at almost 6 years old, I'm ready to build something new.  Parts landscape has changed a lot in 6 years and I haven't stayed current.  This PC will primarily be used for gaming and media consumption, but I will probably be doing other things with it from time to time, such as video and graphics editing, fansubbing, and development.
Current build vitals I have, for reference:
Mobo: EVGA nForce something-or-other (don't have paperwork on hand, it was a bundle with the GPU)
CPU: Intel Core2 e6600 2.4GHz
RAM: 2.75GB (4x1GB sticks [lol 32bit limitations])
GPU: EVGA GTX8800 768MB
HDD: 2TB Samsung 5400RPM HDD (7200 OS/program drive died a few months ago after many years of service) + 2TB Seagate USB HDD
OS: Win7 Pro 32bit
If anyone would be so kind as to sanity check my new build I would appreciate it:
Case: 
Fractal Arc Midi
Mobo: 
Asus P8Z77-V LE PLUS*
CPU: 
i5 Ivy 3.4GHz**
RAM: 
8GB CORSAIR Vengeance
GPU: ?***
OS: Win7 Pro 64bit
*Motherboard is one thing I'm having a hard time deciding on.  It's like option overload.  So many firmwares and onboards and overclocks and PCI-E x4 x8 x16 xxxx yada-yada these days.  I've based my initial selection off the OP, but recommendations are appreciated, it's a little overwhelming telling what's different (that matters) between mobos.
**Not a modding/OC enthusiast or anything, so I just planned to put a Cooler Master (or something) on the CPU and calling it good for now.  Case is going to stay closed so I don't care about internals matching/color schemes/sexyawesomewatercoolingthatIwanttotrysomeday or whatnot.
***For GPUs I'm undecided.  I was not planning to SLI, mainly because $$, so I have been waffling between a 
4GB 670 and a 
2GB 670 (leaning towards 4GB) because the bang for your buck on a 670 seems pretty great, but I could maybe be talked into a 680 if it will make that much difference since they have been coming down in price.  My 8800GTX has been a beast and still performs well, and I plan to keep my current PC running until it dies, but... if I want 5+ years out of a single new GPU, is the 4GB 680 the way to go?
I've already got a PSU (Seasonic X750) and SSD (Samsung 256GB) on hand.  Not adding additional HDD at this time.  Probably will double the RAM in a few months, but 8GB will be plenty to get me going.