Questions about a new build

Well, it seems that I need to start shopping for a new motherboard as the one I have now seems to be dying (often freezes at the initial "Hit DEL to enter setup" screen when I try and boot my PC) So I might as well go ahead and upgrade my CPU and RAM as well instead of spending money on an older motherboard (socket 775)

Was looking to go with the Core i5-3570K as it seems to be the best bang for your buck so to speak.

I don't need anything cutting edge for a motherboard - mostly with my system I play a few video games (mostly WoW, SC2) and surf the net / use MS office. I wouldn't mind having a board with at least some OC capability so down the road I can squeeze some extra juice out of the K series processor but I will never be pusing the boundries of how much you can OC the chip or anything like that. Reliability would be higher on my priority list - this is the second motherboard I have gone through in the last four years, and I didn't OC my old system.

Down the road I may consider Cross Fire for video cards but would never have anything above a two card system.

Other parts that would carry over from my current system:

Seasonic 760 Gold PSU
AMD 6950 video card
Intel 520 SSD

So my questions are:

1) Any suggestions on a reliable, affordable motherboard that would suit my needs?
2) I would also welcome RAM suggestions to go with a new board - I haven't shopped from RAM since DDR2 was king of the hill so I'm not up to date on what's currently good.
3) Is Haswell going to be THAT much better than IB that I should consider trying to coax a few more months out of my current system, or should I just upgrade now?

Thanks!