Personally I love G.Skill's products. They have always been solid performers for me and always work right out of the packaging without any hassle. I wouldn't think twice about vouching for their RAM or recommending it to ya.
As for motherboard, check out the UD5H, as for ASRock, take a look at their Extreme 4. Both solid motherboards, although the Pro is a nice board as well, figured since you listed Gigabyte and ASRock that's what I'd recommend.
As for the CPU you CAN get a 3770K it is a nice processor, however if you're only rendering 1-2 times a year then all the rest gaming/office work you won't really need the i7 and could skate away with a 3570K. But, it is all up to you. Since you've waited 4 years to upgrade, and may plan so to wait just as long, I would then recommend the i7.
Also take a look at a SSD. They will enrich your computer experience and spoil to a point where a mech. drive just won't cut it anymore and when you have to use one, you're just mad.
Goodluck and let us know what you decide upon!