Don't attempt Cerakote without a proper sandblasting setup and dedicated oven.
It also takes a little while to get the paint gun dialed in and your spray method perfected before things start looking really good. For very small parts you'll probably be ok. But if you're talking about doing entire guns with a lot of rounded edges, inside nooks, etc. you might be better off having a professional do it.
After about a year using my 12x12 shop for disassembly, prep, spray, and bake, I finally got to the point where I wasn't afraid to take on projects for other people. Although I was limited to what I could do by using a smaller dedicated smoker (it never had food in it). I could ARs, up to 20" barrels, some shotguns, etc.
Kinda of a big leap to get into the whole scene. I ended up selling the house that had that shop so I retired from Cerakote but I did have a lot of fun doing it once I learned the tricks.
I did use Durabake a few years before I did Cerakote but spraying from an aerosol can was much harder than an Iwata.