Thanks for the recommendations and input.
Weight is definitely a concern, as a 100+lb 9.9Hp with myself and gear about puts me at, or over, the limit of the little aluminum boat.
I’d recommend a Mercury since they are the lightest weight in the smaller motor categories. Mercs are avialable in 2.5, 3.5, 4, 5, 6 hps. The two smallest ones weigh 41 lbs each. The three larger ones all weigh 57lbs each. They all have integral fuel tanks (what you want for canoes/tiny boats. It just a matter of what fits your buget and what size engine the canoe/boats are rated for. Personally I’d go for the maximum size you can afford.
I agree with Scott, on the sizes and what you have said it fine too but I’ve never heard of an alternator on anything smaller than 8hp but they could make one that I’m not aware of. I would not consider a Honda, unless it’s brand new because they are hard to get parts for of local shops to work on from what I’ve heard. I think Tohatsu is a good option, same as a Murcury from what I’ve heard, both are good motors. Johnson and Evinrude also make good motors.