I'd suggest you don't get caught up in "not being able to produce absolutely perfect videos all the time", and just get started instead with what you got. I personally follow many imperfect YouTube channels that are educatonal and fun to watch cause of the content and cause I like the people who make 'em.
Also I'd consider setting up a second website targeted at a similar niche, build up an email list for that using PPC and/or content marketing and sell both affiliate offers in that niche as well as promote your own VAPE products to this email list. This way you can run PPC ads again.
Best of luck!