Of course, glad to help! I've had a great experience with ACOM, so far. The school provides a lot of board prep resources, ample vacation time, and both academic and mental health resources. They also make our clinical years pretty easy, as you have the ability to do aways/auditions or simply do a bunch of rotations in network. Unlike some schools, you aren't left to your own devices to set up your entire 4th year.
I've loved my experience with HPSP! In fact, I met my wife during OTS (Officer Training School). It's really easy to balance the commitments with school-- they leave you alone during the year, and then you have a couple trainings to do during the summer. I did OTS the summer before med school, so I was able to get it out of the way quickly. I then did AFOM (Air Force Operational Medicine) during the summer between 1st and 2nd year, but this is no longer a required course. You'll then do a couple active duty tours at residency sites during your 4th year, which are pretty easy to set up (easier than applying through VSLO). I've been able to get everything out of my med school experience that I've wanted, and not being in any debt is definitely a significant boon as we head into residency and the beginnings of our careers.
As far as interview prep, I studied the questions from the SDN interview feedback, did some mock interviews with family and friends, and familiarized myself with my application. It's open file, so you'll want to know your app inside and out.
I hope this helps, and don't hesitate to PM me if you have any other questions! This goes for anyone in the thread. 🙂