Self Contained Sewer hose on Class A

So my big box store did not have the black stuff so I went with regular schedule 40. Mine is really only intended to prevent me from burning myself and the sewer hose. I did buy some Rustoleum direct to plastic black textured paint which looks pretty good. I know I will need to touch-up occasionally.

Here's what I have so far. I still need to finish the hanger near the end.