Since you don't want to acknowledge the posts telling you that any *long* pole needs to be guyed, then quite frankly you need to decide which way you want it, and you can't have both.Short mast = no guysTall mast = guys.
Fire marshal inspection and no building ground equals no mast - that's that short and long of it.
I'm considering ordering 2 more of those water filled non penetrating roof mounts and just going with a 10 foot or so mast. Height = hassle.
Well you're already 3 stories up, so its just a matter of getting the signal off the roof and you're all set.