Out of the motherboards you linked to, I'd recommend the ECS P965T-A, as I've heard good things of the P965 chipset
I agree with ownage about the PSU, but as you didn't listen to him (FSP) then I don't see why you'll listen to me
It's your choice at the end of the day.
There is a power calculator, which can be found here:
Put in all your components, and it'll tell you the wattage of the power supply you should be using. I would recommend choosing the highest possible options for surge compensation, CPU TDP, PSU utilization and capicator aging.
For me, it comes out as 477W with all those on high - I'm not concerned, as it is unlikely the capicators will age that much in the time I'm using it, and most of the time I don't use the PSU or the CPU at 100%, but its nice to know I'm covered