I'm a big fan of the 22 Pachanga also. Ours is an '86 with a 350 Mag. It consistantly runs 62-63 on GPS with a 23 Tempest @4900 (just me light on fuel). I am constantly impressed with how well it runs. I've always had 16-18 Donzi classics for the everyday boat but this 22 with a cuddy runs 5 mph faster than my last 18 2+3 Donzi.
As far as the cabin goes, I've spent many nights in there. Plenty of room if you are solo.