Rather then try to find 10' aluminum stock, I chose to use what was locally available. I used 1/16" x 1" x 8' aluminum angle for the edge trim.

Many recommend against this for 2 reasons. 1)seaming the trim, & 2) The 1" wide aluminum is harder to achieve a professional look.

I had no problems with either & the price was much more reasonable. The picture shows how I seamed the trim. I cut a 1.5" section of 1" aluminum angle and fastened over the seam. I used plenty of caulk here.
Seaming the Edge Trim