I'm 5'6" on a tall day. My inseam is short enough that I sometimes blow sand in my sneakers when I fart...
I came to the wing from a Honda CB750 back in the mid 70's, about 35 years of no riding. I went to a local dealer, put my wife on the back, and off we went. No problems, easy to handle, and Goldilocks thought this one was Juuuuust Right.. we bought it on the spot.
I assume that when you say "cruiser" you are looking for a bike to take long trips on. ride all day, take your honey, etc? A Goldwing is more like a Harley Ultra than a Fat Boy or Road King. If you want to go from bar to bar, and look cool, a Harley or metric cruiser would be a good choice. If you want power, handling, comfort and passenger comfort, silky smoothness, and legendary reliability, go fro the wing.
A wing is actually designed to fit a rider from 5'6 to 6' comfortably. You should have no problem what so ever. Every time I ride another bike, I get back on my wing and the first thought through my head is "I am so spoiled.. this bike is so much better than... (Victory, Harley, etc) This doesn't apply to sport tourers like the FJR, or the Boss Hoss... They are a lot of fun, but don't fill the same needs for me, such as passenger comfort, long distance riding, luggage space, smoothness, and so on. I was looking at sport tourers when I was getting back into riding until I sat on a wing. Once I rode one, the choice was easy. So go ride one, see what you think.
=Dave=