I have a big package

It's begun, no going back now!

Ordered some factory second canvas from This lovely place in a very nice 67" wide 12 oz canvas
the extra width will be nice for seam allowance and roof overhang.

here's a little sketchup showing the measurements.

found a 5 gallon bucket of outdoor housepaint for very reasonable in a steel blue color so going to paint all the wood blue to protect it.