Maybe you ought to change your signature to "Those who say it can't be done should get out of the way of those doing it".
Like I said earlier, it should not handle any differently at 7 knots with you old engine as it will your new engine at 7 kts. You swapped out a propulsion system, not a steering system. I'm relatively new on here and I see this all of the time on other forums also. One guy says congrats and good luck and 10 guys find fault with it.
I still say it was a wise decision.Enjoy the hell out of it.