I applied to a DO school once and was impressed by it, however, many MDs do not hold the same view. Go to the DO school. Don't let this opportunity pass you by. The stress becomes nearly unbearable at times.
Some programs are easy and others are truely a nightmare.
By the end of the year I could manage 32 patients easily, working 9am-4pm. Start planning now. Residency doesn't get much better, unless you get a cushy specialty. Then when you get out of residency, think about where you are going to work. Think through the whole picture before deciding on whether to pursue the life of a physician.