I can also personally vouch for the 208's capabilities.
I run out of Jupiter Inlet even in the winter which speaks for itself as far as seakeeping abilities.  It is an great 3-man fishing/diving platform or 6-8 person sandbar shuttle more can be tolerated but it gets crowded. 
Whichever boat you do get make sure it has a hardtop, trim tabs, and fresh water.  Your family will thank you, actually in S. FL everyone who steps on your boat will be grateful.
I dont know if the 226/228 is a significant enough step up to be justified over the 208 when you look at the costs but others may be able to shed some light.
My final thought is this:  If you have even remotely considered the Bahamas, BUY TWIN ENGINES.  West End, Bimini, Lucaya are all doo-able with a single (personal experience) but they dont even scratch the surface as far as the islands are concerned.  
Crossing the stream is extremely addicting.