I second the motion to stop saying and start doing! I Have a 5 car garage and spent a year cleaning it so that I could start this project! After all the cleaning (I threw away or donated more stuff than most people probably own) I still only have enough room for my power tools, Cozy bench, Motorcycle, SUV and Golf cart.
Well the workshop is still a mess so I decided screw it and started building. As a matter of fact, I'm waiting for a couple of layups to finish right now. It's taken me about a week to get close to finishing chapter 4 since I am modifying the fuselage significantly.
Anyway, it's a blast, order the plans, order the materials, and start building today, clean garage or not! Your car(s) can sit out for a few years
Steve