starting small business: high startup costs; ENORMOUS timesink when first starting, no learning; greatest possibility of making it big, but far greater possibility of going bust (so high risk).
joining small business: zero startup, steady salary an hours but little possibility of making the big bucks. definitely the safest option. probably good amount of time to learn.
med/engie: huge startup costs (med school is 200k+); depending on your level of education, you may need to do undergrad first; high salary and good hours, but first there is residency during which you’ll be lucky to learn for 15 minutes a day.
rabbi: low salary, huge competition (i.e. all of lakewood etc.), no jobs. nuff said.