Viable alternative to building my own, $1150 as spec'd?

i7 920 OC'd to 3.5GHz with Katana cooler
6GB of 1600MHz DDR3 (3x2GB, OCZ platinum IIRC)
Lite-On Blu-Ray drive
Foxconn Flamingblade X58 motherboard
ATI Diamond HD4870 512mb (was CrossFire with same now single, I will likely buy another to CF)
500GB HD
Antec P182 0.8mm steel case with extra 120mm fan in front bay
Raidmax Aurora 2 700W PSU non-modular (will be replaced when second video card is added)
19" Dell widescreen LCD
Windows 7 Ultimate RC with key and restore DVD

he may throw in a keyboard and mouse...

My build from the other thread is about $200 more, it is an 860 with ASUS MB, 8GB dual channel, a HD4890 1GB card, cheaper case, 22" display, running Vista Premium 64 with a 7 coupon, and includes other goodies like keyboard, mouse, headset, card reader, etc.

This guy claims it runs smooth, quiet, cool, and stable, and he's selling it to buy a gaming laptop or possibly an X58 Shuttle. My wife and I are meeting him tomorrow morning about 2 hours away to test it out and see if she likes it.

Pros so far:

previously built, run, tested, and stable
no pile of parts all over kitchen table
all receipts included
already running 7
triple channel memory
better case
no waiting for it to ship from the Egg

Cons so far:

that PSU has to go if I want to add a second HD4870!
will NewEgg even honor returns/RMAs for a secondary user?
it doesn't have all the little things like KB/mouse/SD reader, but I can add them (reducing the price advantage of course)
will the RC client expire and I have to go buy a copy of 7 or will the key validate it?

School me. I know some of the bits (PSU specifically) are less than ideal but I can swap them out over the next month or three. Anything keeping this from being every bit as useful as the other build? I may buy it for $1050 without the monitor since $100 for a 19" Dell is kinda pricey.

Works perfect! Got the box for $1050 and the 24" monitor for $150. My wife is uber-pleased. She can open and have loaded and ready to view, 50 tabs in under a minute. I borrowed a copy of GTA IV to see how it does, and 1920x1200 with no AA turned on is smooth as glass. I'm happy.

I don't think we'll be needing that second video card after all! But I would like to pop a SSD in here and see if I can even notice a speed difference!