Which p67 mobo for this ram and cpu

P8P67 Pro or extreme 4,they both basically the same except extreme will come with very nice on board Cmos button ,debug screen and it's cheaper,but for the first time build i would recommend Pro or GD65 as there is a lot of people with this MB,it would be easier for you to get some help in case something will go wrong
as far as memory ..you can go on Asus,MSI or AsRock site and download memory support list,choose the board that will offer the futures you want
This should help you to decide;
http://www.tomshardware.com/reviews/p67-motherboard-rou...
to be honest with you Extreme 4 is the best bang for your buck

Edit ; i check the memory support list from MSI and AsRock (the set of RAM above is not listed) ,can't get on stupid asus site ,Gskill shows Pro,Extreme 4 but no MSI;
http://www.gskill.com/products.php?index=356
( it should work on most P67 boards tho)

I own an ASRock P67 Pro3 mainboard that overclocks my i5-2500K to 4.9GHz with rock-solid stability. I would definitely recommend ASRock to anyone, including family and friends ... and random strangers on the internet.

ok and my Pro can run @5.4 so what

It was a simple post in support of ASRock and stated a reason for that support. No need to get uppity.

LOL'd.

ASRock is built by Asus. I'd not hesitate to recommend ASRock to anyone. And in the same breath, the same goes for Asus, MSI, Gigabyte, and many other manufacturers. It's a good brand, I myself used an ASRock for about three years with my first Celeron PC (about 10~11 years back), and it gave solid, reliable and stable performance. No problems were encountered.

I'd still recommend the Asus P8P67 Pro though, I love ASUS (yes, more than I do ASRock), but it is more expensive. Good mobo, and the P8P78 is the most recommended motherboard in the LGA1155 package thus far.

i am more than likely to overclock and sooner rather than later; are any of these boards 'first time overclocking' friendly?

One month ago I built a i7 2600k and the ASUS P8P67 PRO with GSkill ram. Has worked flawlessly from first boot.
I would suggest calling the support lines of the mboard makers and ask some general questions. BEFORE YOU BUY. See how difficult it is to get through and how effective the techs are. Check the WEB for how well the boards are supported by bios/software releases and forums etc.
My experience is that most of these motherboard makers have horrible support. I have found Asus is better then most.

Yeah, all of the above will give you similar results ,it all depends from the CPU (some will OC to 4.8 and some may hit 5.6)

Same here. And on a side note, i have never had a compatibility issue with G.Skill RAM.