I had a similar sized Alumacraft last year and thought it was awesome for river fishing and small/medium sized lakes. I had planned to use it for the occasional Mille Lacs trip, but then took it out to South Dakota on Waubay. Went down the lake from the launch no problem but when I decided to come back 3 hours later, the winds had kicked up to 25-30. Bad deal, if I hadn’t got behind an 18 footer with windshield I don’t think I would have made it back. Needles to say I didn’t take it out on Mille Lacs after that experience. You might be okay if you stayed in the general vicinity of the launch, if that’s where you want to fish.
I wanted to stay with a smaller boat but I wanted something that I could take in the shallows of a river and also the occasional Mille Lacs/Waubay run. I ended up selling the Alumacraft and bought a 16 foot Yarcraft tiller. Still easy to tow (760 pounds), fits in my small garage, but can handle some of the bigger stuff much better than my tin boat.