I owned a Mainship I for 15 years. The boats will handle more than the captain can, that's for sure. They will easily handle anything up to and including 4 foot chop/confused seas, and I have been out in larger, and although I didn't want to be I never felt unsafe only uncomfortable with one exception...I got caught off the Jersey coast in 7 footers head on and close and had to turn the boat to go back to a friendly inlet (Absecon). The turn and the first 2 waves were scary until I got the boat speed right.
In following seas they are "typical" but since you have the 200 Perkins that will give you the power you'll need to match the wave speed and be a little more comfortable.
The Gulf wouldn't scare me unless there was a storm and then I wouldn't be there.
If you have any specific questions ask away.
Mystic,Ct. /New Port Richey,Fl