I have essentially the same boat - an '81 Bimini 220. It is my understanding that this became the Seafarer in '82 or '83. I have a '93 Evenrude 200 on the notched transom. I have never had a problem with that design. I do, however, keep the splashwell (I think that's what its called) up. Every once in a while, I'll get some "splash" on the deck, but it drains back out quickly.
The only issue with these boats is that under the aluminum cap on the transom is an opening that water has a tendency to seep into. Fortunately, I never had any structural problems, but decided to reinforce the wood with Git-Rot, which is a penetrating epoxy. Now I have 100% confidence in my hull.
I also find that the cabin windows leak during heavy rains, which for me isn't a big deal since I just store my fishing gear in there. It's not enough water to make a difference, but it could get annoying. I will silicone around all windows when the weather warms up a bit.
Overall, it is a great boat and has plenty of room to fish from. This was my first boat and I am really happy with my decision. Another thing to consider is that since many marina's (assuming that you will wet slip), charge by the foot. I would image that it is a few feet less without having the engines on the bracket.
The only thing that may change things for me is that I may be considering moving up to a larger boat with a larger cabin so that the entire family will enjoy boating. If I do, I will gladly list the boat and trailer here first.
Good luck and let us know how you make out.
David