135 will give bigger prints than 150 for a given height. I don't know of any shorter enlarger lenses for 4x5; you could use a good 90mm objective lens (e.g. Grandagon-N or Super Angulon) in a pinch though the quality is likely to be poorer than a proper enlarger lens with flat field.

Anyway, how low is your ceiling? I can get 16x20" prints from my 135mm lens while using only about half of my enlarger's column; it's a desktop DeVere 504 and not unusually tall. My suspicion is that you will run out of easel before you run out of ceiling clearance with a 135.