Congratulations on staying debt free ! Shows a lot of discipline and planning. However , you have to spend money to make money and, a $25,000 investment that doesn't depreciate is a no brainer to me personally. There is one investment that you could never get back if you lose and that is "time".
How many baskets do you want available to be able to put your eggs in?

My suggestion is, get a degree that doesn't require passing a medical to be able to hold the job. Best of luck !!! Cheers !