WOW! Nice, John!!!
I don't now how I missed this post -- last time I posted, you were in the planning stages....
One thing I learned is that no matter how big your storage is, you will continue to find things to put in it,
until.......you have to walk sideways around everything ...and/or climb over stuff!
When the wifey & I were house-hunting, I overlooked my house for months (looking online) because the pic didn't impress me. When I finally said
what the hell, I'll go look at it for shits & giggles, & actually saw that there was a barn, that was......
BIGGER than the house on the property, I went speeding thru town looking for a pay-phone (was soooo broke then!) to tell my wife:
TELL THE REALTOR WE'LL TAKE IT! NOOOW!!! The barn sold me -- I didn't care if the house was condemned!

The outside measurements including the lean-to addition on the back are 46' L x 26' 10" W. Plus there is a loft upstairs!
I've been in the house for 5.5 years & I need to climb over my Polaris to get to the back lean-to, although there is still a bit of room in the loft -- probably because I have to spend 45 minutes moving stuff out of the way to get to the stairs!
I never dreamed I'd ever fill that space up, but I did.........& then some!
Yours is much more user-friendly than mine with the 3 bay doors -- not to mention 1000 time nicer looking! Way to work, bro!