400 hours is 4 hours per day 100 days... 2 hours per day 200 days... 3.5 or 7 months... not years... 500 hours is 20% more... 600 hours 50% more... still not even close to ONE year...
Having many hours in F-33 powered Cloudster. Zing, and Woodhopper, and some time in a 277 powered FP-505, I have decided to build an airplane.