None of the boats you listed will even get up on plane with your 15hp. While Tohatsu is a great motor if that is what you want to use then forget the idea of any of the mentioned boats.
Way too heavy for your motor. If you want one of those then consider selling your Tohatsu and do not go too light on the boat. A 25 will bring it to plane but a 30 or 40 would be my choice.
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