You only need a 3rd class medical to fly as a student and once you get your PPL. Why are you trying to get a 1st class medical?
HIMS (and whatever your specific, related situation is) isn’t going to look good, so if you do get an interview, be fully transparent, honest, and discuss how you’ve learned, become a better xyz, etc.
PPL is subjective; some units hard require it while others will hire a guy with 1 hr of flight time. So it may not matter a ton, but it is guaranteed to help you in many ways, so certainly keep pressing towards that goal.
You’re old to be starting this process - time is your worst enemy right now. If you’re going to take a shot, start getting apps together right now and throwing them in. Even if it sucks now, maybe you send in a much improved app a year or two later and that gets noticed. You never know unless you try.