Not so much. People get burned out because they zone in on premed way too early and don't take the time to see what other options might be out there. And they certainly don't get burned out because of the high school college end of it, they get burned out by the grueling end, which OP is actually trying to rush into earlier, before s/he is ready.
For someone already cutting high school short you definitely don't want to streamline things further. Med school goes much better for those who have taken the time to know themselves and have put a lot of the angst of high school and college behind them. In the US we intentionally have adopted a model of education that puts college between high school and med school precisely because there's a certain amount of maturation and seasoning that really helps people have the right mindset to be a doctor. Yes it sounds very Ferris Beuller but there's value in stopping to smell the roses and experience (college) life because you can't go back and it's an experience most of us build on in some ways.
Nontrads have been increasing in med school and the average age has been inching UP, not down. Postbac courses before med school are now quite common, at some places the norm. And that's understandable because medicine is very much about death, disease and helping people over very emotional times, and it's helpful if you've lived a little life before you undertake this journey. In short the slow contemplative path is the one that's being embraced over the rush to get on a fast track.
Sounds like the OP has the grades and SAT scores to get into a decent four year college. From there if you do well med school will still be there and you'll be better positioned if you change your mind. As for MD/DO I think it's bizarre that OP would ever want to make that decision now rather than see where s/he is in four years. (Or where osteopathy even is in four years, given the ongoing merger discussions). Four solid years in college and a top MCAT score and OP could potentially be looking at a school of his/her choosing (be it for prestige, cost, research goals), rather than settle for this streamlined but potentially less ideal option.
To lock into a shorter osteopathic path now sort of telegraphs that you don't want to or are afraid to work hard. You are in a rush to call yourself doctor fast, but don't want to spend the time working to actually control any aspects of your destiny, specialty, degree, school etc. This doesn't bode well for your success in this field which requires a lot of patience, fortitude and a willingness to roll up your sleeves and grind away. Maybe this is the kind of stuff you'll want that extra year of college to instil. This 7 year DO path IMHO is thus really a suckers play. You are saving a year but giving up who knows what opportunities. You may end up "a doctor" a year earlier but maybe not the kind you wanted. Osteo schools will still look at you in four years if you do decently and that's your goal. But right now the cards are in your favor to play out the hand and see your cards rather than fold early. Enjoy the college experience, see other options, season emotionally, do well academically and leave the med school commitments for later.