This is absolutely a substantial and good looking structure.
I'll be 80 in 5 months and I built this by myself (had 4 friends in their late 60's and 70's help put the roof panels up onto the trusses).   I worked on it 5 hours a day for 5 days ; with the help of my Kubota.
My wife and I are completely satisfied with the project; our boat has a place to stay.