I'm 23 and still wondering if I should have started sooner. I'll probably be at an airline right as I turn 25. If you are making good money right now, I might look into buying your own. Since you're already on the brink of having your commercial, it wouldn't hurt to moonlight as an instructor to build hours and give you some time to make a decision on it. I loved instructing and will probably find a way back into it.