Mr. B. Practice, practice, practice. Yep. Take her to the lake and have fun. Throw out some fenders and then try to maneuver to pick them up. Try to back in a straight line. Learn to use your "prop-walk". Neutral IS a gear. Go slow enough so that WHEN you hit something you do as little damage as possible. Start out in calm conditions (wind and current) to build your confidence. You'll soon learn to read her reactions.
I would strongly suggest you hold off on ANY major alterations or renovations for at least one season.Sure, clean her up and get her ship-shape. Repair that loose fitting, do some maintenance etc. but delay thruster installation and that includes trolling motors (as mentioned).
I knew of a fellow with a 38' Marine Trader (MT) single Lehman. He had a bow thruster installed. Several years later I asked him how it was working out as I had a 34 MT at the time and was thinking of adding a bow thruster. He said he used it quite a bit the first year, not so much the second and hardly at all subsequently.
I decided NOT to go the thruster route and was quite content to live with the occasional embarrassment of entertaining onlookers with a poor landing. Nobody got hurt and I didn't break the boat or anything else. Win/win IMO.