Well, that 'splains SideShowBobs skills with a spoon and squeegee.....
I cannot attest to Trinidad but I can attest to going to school full-time and working full time.
You cannot gain the full benefit from school if you are dog ear tired and red-eyed from working all night.
The vast majority of people I know that tried ended up either failing or walking away from school.
If you are going to invest in school then you need to focus 100% on that. Otherwise you are cheating yourself.
An alternative-find a Smith that will let you help around the shop and maybe make a few bucks on a part time basis while you hold your full-time gig.
Decide if Smithing is really what you want to do.
Look for NRA sanctioned "specialty classes". Most are a week long and focus on one area like bolt action rifles or 1911's.
Old joke-how are a large Dominos pizza and a Gunsmith different? The pizza can feed a family of four.
Very difficult to make a full time living just on Smithing. Those that do either live in a trailer or have paid their dues for years and are specialists in a certain discipline, like Bill Laughridge of Cylinder and Slide fame.