I agree with all that has been said here. It might be good to get your confidence up on a hybrid bike, but it will be a different animal than a road bike in some ways. From that point of view, you might have to re-teach yourself when you get back on your road bike. The exercises are a great idea, as well as getting to an area with less traffic. I do mainly trail riding, so a hybrid is better for me as a starter bike, but I can't wait to get a roadie!

Good luck, and keep practicing!