The only thing I'd change is for a GTX260 Core 216 as they're not much more and they're much better than the 512/1GB 4870s

Ditch the Acer 24inch LCD - It's terrible, real nasty budget model.

Apparently the Hanns-G HG281D which is 28inches is available for only a little more, at least in the UK (£200 vs £250)...

And it's 28 inches!!! I got it and it's very nice.

The Intel i7's overclock themselves.  That's not your motherboard doing that.    When the temps and voltages fall low enough, the chip will shut down some of the unused cores and overclock the remaining core/s.  Nice build.

That's $234 vs the $160 for the HD 4870.  That's quite a bit more.  However, I've decided to buy a second and run them in CrossFire.  2 HD4870's for $320 is hard to pass up.  A single 280 GTX still costs that much by itself.

The reviews say it's pretty good.   I've, however, never heard of a Hanns-G.  At £250, that's $360.00 USD.  $110 more than the ASUS (not an Acer).

All in all I think it is a solid build. It isn't really up my alley as I prefer some different brands the amount of power is pretty much on par.

With all the processors, cards, fans, add-ons and being added to systems today, it's harder to find the power to you need without overheating! Your relief has arrived! Here's extreme PC power & cooling performance and reliability, with 750W of continuous power and a peak power of 825W!

It features a powerful single 12V rail rated at 60A continuous. The ultra-quiet cooling design leaves the inlet wide open, so 90% less noise is generated per watt with an impressive 83% efficiency. The active PFC (.99) neatly handles input sags and surges and eliminates the need for an 110V to 220V input switch. Automatic fan speed control minimizes noise without sacrificing proper cooling.

This power supply has a 24-pin main connector, a 4-pin 12V connector, an 8-pin 12V CPU connector, 8 peripheral connectors, 6 SATA connectors, a floppy connector, and two PCI-E connectors, two 6-pin to 8-pin PCI-E connectors. The Silencer 750 Quad is NVIDIA SLI and CrossFire certified. This economical, ultra-quiet power supply is backed by a 5-Year warranty and support.

+12V @ 60A (Powerful Single Rail)

$129 (20 MIR)

Seriously is a better built PSU and quieter too! So it will last you.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009

Sounds good now that you're going for 4870 CF. You may be able to save money by going with a Q9650 - similar performance and CPU price, but you can use DDR2 memory which is half the price, and also the motherboard will be about $100 cheaper.

High end CF setups do respond quite well to more CPU power, so by the next GPU gen or the one after he'd have to pull his entire motherboard to do another full upgrade again. Its less hassle if you're going high end to stick with the i7 range or the AM3 range.

You do know those are the exact same PSU made by Seasonic, don't you?  Take a look at both PSU's again.  Notice how everything is practically the exact same, just different branding?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151068&Tpk=seasonic%20750

This one?

Anyway, I was looking at reviews for PSUs for my upgrade recently and that model came out tops more often than not in roundups. Corsair was generally middle of the pack, so who-ever makes it, makes it really good.

I'm not positive which Seasonic model it is based on or if Seasonic made thier own build of it (they OEM for other PSU makers).

Based on Newegg reviews, both our PSU's scored rather equally.
Corsair - 616 reviews - 78% 5 star.
PC P&C - 537 reviews - 79% 5 star.