Before I committed to a full time program I would check out one of the NRA's summer gunsmithing programs, they're conducted at several gunsmithing schools around the country. You can explore the topics that you're interested in and may be able to learn enough to accomplish your goals. I was in my mid 20's when I started the gunsmithing degree program at Trinidad State Junior College in Trinidad, CO, After graduation I sent to work in the gunsmithing department of Browning Arms Co. in St. Louis, after four years there during which I earned Journeyman Gunsmith status I opened my own gun shop. Now retired I do small jobs for friends, cleaning, scope mounting etc., my advise would be to keep your day job and get started slowly, the NRA classes are taught by nationally recognized gunsmithing experts and are an excellent value for the small amount of time and money expended.