C 13's are nice, but they are still allot of work to set up. You need to replace the back with normal wood or it can be to wobbly and the cardboard backing can get rotted after a few grows, also light proofing the doors are very tricky for many and once they are put up they really should stay in that area it seems like after you drag them apart they are never the same again.
Also, you need to do all of the vent holes and plug in holes and threw the wood and your not just using a razor like on small cabs.
I have a double c24, meaning I took two 72x47x19 cabinets and put them together with a 1K light and believe me it was some work. I also have a small 30x30x19 cabinet with a 175MH and 6x23 CFL's for veg/mother with fan and passive intake so I have a little experience with the cab growing.
Adieu