That would be great. I can definitely use some insight on potential improvements.
OP, I'm sure you have probably made your decision already, but I stumbled across this and thought I'd give my two cents.
If you had a PCOM acceptance (not just some guy trying to rope in to committing to a program), you might see more people saying, go DO rather than risk it. The thing is, you don't. You don't really have much to lose by taking an extra year. With your stats, you really could get into any DO school, provided you fix whatever is wrong with your app.
I'd wait out this cycle, send LOIs and updates to the schools you are waitlisted at, and then if nothing comes out of them, apply early and BROADLY (and I mean broadly, because you clearly didn't do that this time around) to many MD programs (low-mid tier). Many MD programs would likely take you on stats alone, provided you aren't a weirdo at the interview. Next cycle you should also throw in apps for your 3-4 favorite DO schools for good measure.
If after fixing your app, applying early and broadly, and still not getting into MD school, then at that point go DO.
Everyone says things like if you really just want primary care or you know you don't want to do a fellowship. The thing is, you have no idea what you want at this stage. Things change in 1-3 years let alone the 10 between you as an applicant and you as a soon to be attending considering a fellowship. Most people don't even know what most fields are like at this stage to know what they want to do for the rest of their lives. Why limit yourself now?
I'm happy and proud to be where I am as a DO student. I too was waitlisted at MD schools. Unlike you, however, basically all DO and MD schools were a reach for me given my GPA. Given my situation, it wasn't worth the wait, especially considering being a non-trad already a few years older than the average matriculant. You, however, are in a different situation.