Requesting help selecting MB + CPU cooler

GOAL: Build an enthusiast-grade or slightly higher PC on a reasonable budget that will be more than sufficient for current needs and upgradeable piecemeal over several years.

CONSIDERATIONS: This is - or will be - my first hand-built PC. I've rolled my own Linux distributions for a decade, but have never built the hardware end before. I do a fair bit of gaming, but I also do a lot of coding and heavy-duty, deeply linked number crunching, so this system will not necessarily resemble any one "class" of machine. The machine will almost certainly be overclocked eventually, and I'm planning for CPU cooling on that basis. The parts list presented is the product of a couple of days of research, and is not presumed to be in any way perfect, so recommendations are welcome. And if I've made any obviously bonehead errors, feel free to point them out as such.

BUDGET: I set my target number at $1250.

COMPONENTS:
CPU: Intel Core i5-3570K
GPU: Gigabyte GeForce GTX 660Ti
Memory: G.Skill Ares 16GB (4x4GB)
SSD: Samsung 830 Series 64GB
HD: WD Caviar Blue 500GB 7200RPM
Optical: Whatever I can find for ~$20.
PSU: Corsair Enthusiast 750W (need bigger?)
Case: Fractal Design Define R4
Total cost as specced: $1023

Motherboard: I frankly do not know.
CPU Cooler: Cooler Master Hyper 212 Evo


Now: my question is, what Z77 ATX motherboard, and what CPU cooler for mild-to-moderate overclocking, would be an optimal fit for this setup? I'm considering the Hyper 212 as a cooler, which (assuming it's the right thing to get) would bring my system total up to just under $1060, giving me $190 to play with for a motherboard and maybe some extra fans. What motherboard would be the best fit for this system?

Thanks in advance,

mac