I think this system is a pretty good build, and if you wanted to do any more upgrades you could go for the E6750 processor, this seems to be the sweet spot in price/performance right now for Intel processors.
The system that FPVDriF6 put together I would definitely get that if you can spare going over the $900 budget for now and getting the rebates later on.
Ups 3 day shipping will be atleast around $35 or so depending where you live..
Around $965 for a complete system is not bad not including the rebates because you will have to pay that price up front first before you get the rebates.
I would maybe look at a better powersupply. I use to always recommend antec but here lately they have been having some problems with them like DOA or they burn out. You do get a 5 year warranty though with antec and they do keep their word on it.
Lg is fine for a dvd burner. Samsung is the same price both have same quality.
Id start buying that system right now lol and get ready for gaming.
In particular, what I was trying to do is get some different brand alternatives out there. jrm20's point on the DVD Burner confirms this - the LG or Samsung would be good. Same with the hard drives (Western Digital, Seagate), motherboard (Gigabyte, Abit) etc... All are good quality brands and should do the job nicely.
In regards to the power supply, the Antec is an exceptional product. If it does arrive DOA, then obviously you can get it exchanged for another one - it does happen. If you wanted to look at a different brand, I recommend something like these choices in addition to jrm20's:
Silverstone PSU $159.99 ($20 rebate brings it down to $139.99)
Cooler Master PSU $169.99 ($40 rebate brings it down to $129.99)
Hope this helps