the fact that its BS/DO doesnt really matter. There are BS/MD programs as well. I wouldnt recommend any one to apply to either type, and i think thats the general consensus. Ive never heard someone say "Well you should apply BS/MD but not BS/DO." The problem is not the degree, its the fact that you are REALLY young when making this decision. You really think you know where you want to spend the next 8 years of your life? You might not even want to go into medicine anymore. Go in to college with an open mind and enjoy yourself. If you have an interest in medicine then do your best to pursue that interest. If you do this, and also enjoy yourself with outside activities and friends unrelated to pre med/medicine, then by the time you are ready to apply you are going to have a pretty stellar application and MANY options to choose from.
From someone entering med school, I wish I had considered this a lot more. Doing a BS/MD or BS/DO program never entered my mind even though I probably had the stats for it. Med school admissions are a crap shoot: you can have a high GPA/MCAT and still not get in anywhere. Having a reserved spots saves you time, IMMENSE WORRYING FROM HAVING TO COMPETE, APPLY, INTERVIEW, WAIT and money. The only thing I'd be worried about is whether or not you're ready to make this choice. At 18/19 you really haven't experienced what's out there in terms of a career. Taking 4 more years to apply might be worth the perspective.
I agree however I think a lot of premeds (myself included) knew they wanted to be a doc way before college... not saying everyone, but a lot