Got plenty of slightly bent metal left over and planning for a cover both front and back decks
Smart. That will help a lot with protecting the T1-11 siding that you used on your walls. Also be sure to keep up with painting it regularly since that type of siding is famous for soaking up paint and then flaking off and rotting out quickly. I personally recommend Zinnsser primer. The oil based BIN is the best, but their 123 primer is easier to apply and half the price. Then the only two brands of paint that I recommend are Sherwin Williams and Valspar from Lowes. When the last reformulation happened a few years ago, these are the only two brands that where able to come up with a decent product. The Valspar is going to cost less, and I don't think you'll notice a difference between either. Do not rely on stain or anything clear if you want the T1-11 siding to last. It has to be covered in paint, and lots of it.
I get a lot of jobs going over wood siding with Hardie. But that's a huge project that I'm sure you are not wanting to deal with at this time.