From what I understand, it shouldn't really hurt your chances as long as you have high marks everywhere else. Your GPA is great, so make sure your OAT score is just as good and you should be fine. Also, make sure you can provide an explanation as to why you dropped those courses.
I think you are fine. I have yet to hear of them questioning withdrawals( I have had at least 4 withdrawals or more and have gotten interviews). However, if they ask, they want to know that you have learned from this). A 3.7 is great and you should be ok getting at least a 300 on your OAT