I'm not sure I'd use the flaps with a plane like that on landing. They aren't really needed, and thinking about where to deploy them and the changed flight characteristics keeps you from concentrating on what you're concerned with: lining up your approach.

Ask one of your mentors at the field for any tricks they might use. Some folks use reference points. What works for me is just practicing. If you're not comfortable shooting touch and gos over and over, start up a little higher and work on just placing the flight path over the runway. Keep bringing it down a bit lower, and before you know it it'll be old hat for you.