With mITX, it's not just the cooler height to worry about. Most mITX boards severely lack real-estate for all the options, so build Up instead of Out. M.2, audio, chipset coolers, vrm coolers are all vertical mounted, not horizontal.
Wasn't such an issue with the square Intel mounts, but with the later series rectangular, it's more pronounced.
I'd go with liquid cooling. There's very, very few options for air cooling that will physically fit on the mobo, never mind inside the case.