apologies: a little long.

I grew up teaching myself woodworking. Went to art school and made sure I learned a lot of fabrication skills along the way. Got an entry level shop job making furniture right out of school. worked my way up over about 10 years until I was a junior level project manager. I now make just under 6 figures as a PM/Design engineer, but only in NYC or LA. I work mostly in exhibit design, custom millwork, high end retail fit out work, one off custom fabrication like making large art pieces for museums, etc. I tried leaving for a smaller major city and ended up making $16/hr and having to work as a shop laborer again, so I'm back. I get offers for PM or Fabrication Manager in NYC no problem, all right around 80-90k. I don't mind the work and I'm good at it, but I either want to go all the way and make like $125k or $150k so I can save up for retirement and travel, or be able to get an $80-$90k job in a lower cost of living area or outside the US. Id really like to not be stuck in NYC anymore.

so here's where I'm at:

• 40 yrs old
• bachelors in Fine Arts, no other degrees or certs
• 7 years experience as a part time college faculty, which I ruled at but couldn't make money at
• 15 years experience in arty fabrication industries like expensive furniture or museum exhibits or building displays for stores in Soho, about 3 of those as a project manager.
• really good at understanding things in 3d but just an ok drafter because I'm not super experienced at the software. likewise with video editing, coding languages, etc. Taught myself Solidworks and am pretty good at it.
• not amazingly talented at talking to people. I suck at sales but am awesome with my crews or teaching, if that makes any sense.
• really good at engineering designs, really good at fabricating, pretty good at designing. Have something that most people in this industry lack, which is the ability to both design and build, therefore meaning I understand manufacturing processes and needs better than most designers, and vice versa.
• do better behind the scenes doing the smart nerdy stuff than as the face of a company. better at solutions to complex problems than I am at convincing someone to give me their money.
• have a ridiculously dedicated work ethic if I care about what I'm working on, but almost none if I don't. Also have a tendency to work like crazy for months or a year and then burn out and need time off traveling.
• do best when I have ownership of my projects and the trust to do them the best they can be done, dont handle micromanagement well.
• ok/"have potential" at a lot of things I've only done part time for a little while, like motorcycle mechanic, car mechanic, mountain guide, etc.
• and the number one thing on my bucket list is: move abroad for two years at least. perhaps permanently.

What seems like the best path forward here? Architecture degree? Project Management certifications? Industrial Design Master's? Engineering degree? Start my own company? Switch industries or sidestep slightly to something else? Comp Sci/coding?

thanks in advance.