Welcome, Vadim. You have more boat than I do - I hitch a ride with a buddy.
From what I've seen (and read here), your biggest concern is handling in any waves and how quickly you can get back to safety when the weather changes suddenly for the worse. My guess, on Lake Ontario you're looking at only perfect weather (<1 ft waves) and staying 15 minutes at full throttle from safety. Someone more experienced will speak up if they disagree.