I would be real careful with the 'self install' option, Irma had wind surges around 115 MPH. When you apply for ARC approval you maybe required to fill in a contractor (it has been a few years since I did this), and you may need detailed plans for approval, do not ignore this, as there have been cases where homeowners were required to remove unapproved projects.
I recently helped with some minor modifications to an aluminum pergola and I was very surprised at the size (8" by8") aluminum supports that were almost 1/4 inch thick, horizontal beams were also about 1/4" wall thickness about 8" by 4". All the construction was much heavier than I expected.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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