This is very awesome, best of luck in finding the fun gameplay loop!
Maybe you would benefit in adopting a self-generating dungeon, I’m pretty sure there are plugins for that(?), then refine by hand/create the hero locations.
I can’t imagine you not managing getting an env-artist role when you start applying. The problem might lie in your ability to relocate, but many smaller indie are looking for remote workers, so you should definitely look into that. Have a look in our jobs subforum https://migrationtest.mapcore.org/forum/12-job-postings/ being in touch with someone working at the company would be definitely an advantage to perfect your application