Just need some opinions before i buy

Errr I'm going to assume this is a gaming build and you don't want to overclock/plan to SLI in the future. Drop the z77 mobo to a h77 or some sort. Drop the 750w psu to a 550w psu.

Sorry I forgot to verify that. Yes it is a gaming build

Not to question your choice, but why drop the z77 to h77? Seems like a downgrade?

The z77 is only used for an overclocking build. Since you don't know a lot about computers I'm going to assume you're not overclocking. A h77 will be about the same and cheaper. Also, I suggest you watch the newegg 3 part video on how to build a computer. It really helped me when I built my first rig not so long ago.

Any suggestions on a specific board? I read the review on a few and everytime I find one, the bad stories of DOA scare me out of making a choice.

Ok... here's a little help. First, the 3470 is nearly as good (I mean, as good, really) as the 3570 (non-K version). You don't need a Z77 board, as H77 will be enough (if you look hard enough, you'll find a reason not to order any item... ) you don't need 400 watts to push that system, let alone 750. I don't know how much that build you have up there costs... but I'm sure it's more than what I'm going to link for you here.

If you have any questions about why I picked a certain part, simply ask (might be later today before I can get back to you). I will say this has a substantially better video card, a larger HDD, and what I consider a higher quality PSU (albeit one with less watts).

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor ($188.79 @ Amazon)
Motherboard: ASRock H77 Pro4/MVP ATX LGA1155 Motherboard ($87.55 @ Newegg)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($47.98 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($73.52 @ Amazon)
Video Card: Sapphire Radeon HD 7870 XT 2GB Video Card ($234.99 @ Newegg)
Power Supply: XFX ProSeries 450W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($49.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($18.98 @ Outlet PC)
Total: $701.80
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-03-01 10:12 EST-0500)

It all looks good to me! More affordable too   The only thing that worries me is the PSU. I went with high wattage as a precaution   But im a n00b so I didnt really know the exact wattage the system would be pushing. Thank you for your help and ill definetly look into getting those parts!

The 450w should be enough, but it'll be close. Since you're not overclocking or planning to crossfire, that is a solid build. Just a reminder that if you're going to upgrade your gpu in the future, you should probably upgrade the psu first.

At a completely stressed load (not something you'll achieve playing games) the system I built will draw ~360w of power. 450w is plenty. It gives you 25% more than you'll need under full load. The reality is that system will probably never pull more than 250w while gaming. You could upgrade your card without issue, though crossfire would require a large PSU. I'd take the savings now, and if you should decide to crossfire, buy the larger PSU then. My guess, by the time you decide to crossfire, you'll be better off just buying another single card (which this PSU will happily power). Enjoy!

And future cards will need less power... TECHNOLOGY FTW
So ye 450w is good

Thank you all for your help! The parts are slowly on their way   Cant freaking wait!!!!!

Have fun!

Just another 2 quick questions, how much more wattage would 2 200m fans be? Cooler masters to be exact! And would this MOBO have enough plug in sports for the 2 extra? Plus the 2 120's the case came with

The mobo should have about 3case fan headers + 1 cpu fan header. You might need to use a molex connector.
Also, 2 more fans shouldn't take up that much wattage.

These are the specs I found on newegg  
1 x IR header
1 x CIR header
1 x COM port header
1 x HDMI_SPDIF header
1 x Power LED header
CPU/Chassis/Power FAN connector
24 pin ATX power connector
8 pin 12V power connector
Front panel audio connector