First- thank you for your service and congrats on putting yourself in a great starting position to get out of the rat race.
I think the first thing you need to answer is your personal life- when getting married/kids etc. Assuming you're single (since you live at home), I'd keep personal living expenses as low as possible. Either stay at home or go rent some super cheap place or house hack. You want the majority of your salary working towards your RE goals.
Make connections locally and you can find some good deals that need love. You can find folks willing to do owner financing with some down. Your rents cover the payments plus. You can buy some properties that need work but are livable and do lease options with them. For example, I'm looking at a property that is ARV of 80K. I'm trying to get it for 30K. It is livable so I'll do a lease option for 55K with 5k down. They pay $800/month and fix it up them selfs. They have equity and when they exercise the option, I'll get the last 20K. So I did no rehab and made 25K plus rents. It's a win for everyone. There are dozen of other ways to increase your portfolio quickly without getting a bunch of bank loans.