It's really not as hard as you think. Pvc and 2x4s are stupidly easy to work with. If you have a drill, a decent saw,some screws, some pvc, some 2x4s you're golden
https://www.newschoolers.com/ns/cult/forum/cat_id/1453/
^ build a jib cult has a million threads about building pvc rails. Different ones people built, step by step guides etc.
Don't over think it and you got it.