Yowza! This looks pretty good once assembled, but we needed 12 feet and it was an interesting install for two women that have never installed a handrail before.  Patch and paint tomorrow. ￼
I would say my biggest advice would be to make sure you FOR SURE wear the safety goggles - when you are drilling into the metal handrail, there will be little metal slivers everywhere. Ain’t nobody need no metal slivers in their eyeballs! Vacuum up carefully!