Unless you get a 9xx's AM3+ board, it probably wont house an AM3+ chip...as odd as that sounds. So, i would suggest the Asrock 990FX, their bottom like, if you go with an AM3+. I recommend you dont though, and get an 880 AM3 board. This will free up some money for a better video card. If you are going amd, and only have that budget range, check to see if they sell an AMD Zosma 960T chip. It has the possiblity to unlock a 5th and 6th core, and you can get a cheap aftermarket hsf for OC'ing, preferrably a Cooler Master Hyper 212+ (EVO).
Everything else looks ok. Keep an eye out for the new 6xx's and 7xxx's coming out either end of year or early next year for gpu's. If you have the means to save some cash, and you can wait, i would recommend getting a 64xx gpu for now, probably 1/3 of the price of the 460, and then upgrade after the new release.
What happens if i was to buy a placeholder gpu like a hd 4850 secondhand? would that work as well? thanks for all that advice really helps. they don't sell AMD phenom ii 960ts and could i replace my gtx 460 se for a hd 4850 at about 50 pound and buy a coolermaster hyper 212?
I would definately get a "placeholder" card if you can save up for a new release card. I realize budgets are tight, so i think buying an AM3+ board, especially with Bulldozers produced more for multi-threaded apps instead of gaming, an AM3 board is all you need, along with a Phenom II BE chip. The 955BE is the best AMD chip for gaming if you are willing to OC it.