I recently purchased the SOC board on sale and I was wondering if the 4 power phase would be something I should worry about not being enough. I do believe the IR3553 are quite high-end mosfets however.
How would it compare to say that ASUS z97-A that uses an ASP1252 controller with 4 true phases and doublers to get 8 digi phases?
well basicly 4 powerphase should be totaly fine, remember that in terms of overclocking, you need to be lucky with the haswell cpu, vrm is inside the chip it self. so it depends more on the chip how high you could get mostly. Basicly every Z97 board will overclock.