I5-750/SLI/USB3/SATA 6 MoBo question -Answered-

Hello, I'm building a PC $1200ish price range and I have a concern with the P55 chipset that I'm not sure is really chipset based or not.

I wanted to be sure to have the most up to date Sata and USB standards, and I was hoping to be able to SLI some Ati 5850's. The problem being, I understand that the graphics Pcie lanes are limited to 16 (8x8 SLI) with P55, and from what I can tell most of the USB3/sata6 mobo solutions involve stealing from the graphics pcie lanes making it pick and chose if you want to sli or keep the newer tech standards.

So the question is-

1. Is there a Mobo with SLI 8x8 as well as USB3/Sata6 that I can use simultaneously WITH an i5-750
2. If not, is there a Pcie card solution that isnt going to clog up tons of other resources, and is bootable.
3. If neither of the above, is there a more economy-line Mobo & power supply that would make it easier to say, save $150 to put towards a better single card but not have 2 pciex16 lanes.

Pc build atm looks like this, looking for best price/performance outa the parts. Already have all the peripherals. I am not looking for overclocking headroom if that makes a difference.

Case - got a couple in mind, full tower
Power- Diablotek 650 watt PDH650
CPU - i5-750
ram - looking at 4 gigs with room to grow to 8
GPU- 3850, room to upgrade preferable
sound- sound-blaster pciex1 card, already got it so not included in the price.
HD- 1 30-40gig SSD for boot, generic cheap storage drive

Thanks for the help/advice.