Sounds like you were living the dream.
it's actually where i learnt all about led. i worked on stuff way more complicated than a grow light. our first led grow lights were show lights.
hard to do it as a full time job. plus there is a lot of physical labour. it's really blue collar. i eventually got good enough that i didn't have to haul as much gear, but that's only on bigger shows.
i'm glad i don't do it any more.. every once in a blue moon they'll haul me out of mothballs though.