Over the years, I have known several DPM students or graduates that have switched over to DO / MD. Many of them ended up going to DO schools. A handful went to Caribbean MD schools. Very few went to American MD schools. With the ones that I was able to locate some residency info about, most of them ended up matching into Family Medicine, IM, Pediatrics, or ER. I know of one DO (former DPM) that matched into Orthopedic Surgery. One MD (former DPM) went onto Radiology. With very few exceptions, most of them started over again as MS1. As someone mentioned, NOVA used to have a "slightly" accelerated DO track for DPM graduates.
As others have suggested, you need to do a deep dive and figure out what you want to do. If you are thinking that you are no longer interested in Podiatry, but may be interested in one of the other medical / surgical specialties, then you should apply and go to MD / DO school. Remember, surgical specialties and "desirable" medical specialties are competitive to get into. The fact that you are doing well academically in DPM school does not necessary mean that you will do equally as well in MD / DO school. Right now, you currently do not have any student loan debt, which is a great and ahead of many DPM grads. If you are interested in Podiatry and your concern is about jobs, I think that you should focus on doing well in school and clerkships and get into a good residency program. Many graduates from good residency programs and/or fellowships do find good / decent jobs.
As for the VA positions, many of the positions do not pay "low" salaries. Many of them are in the $200K + range. There are a bunch that are in the $300K + range, such as some of the DPMs at VA hospitals in Oklahoma.