Your goal of 100 units by the time you separate is great, I would also like move in that direction before I leave active duty. 

So, be sure to check your state & local laws and follow them EXACTLY or risk losing.

I would try to invest locally first, in something where you can learn how to landlord a little bit.

The best thing about this is it's a free source for building connections and getting information on local meetings.I have found that no one source will give you all the helpful information you'll need to be successful.

I have made it a goal to own our first property in the next 9 months and hope to attend community events and get engaged with local investors and agents in the mean time!

Also look on the local MeetUp sites for investment groups that meet their locally. 

Quick thoughts on the markets you're considering:Knoxville, TN: Growing, affordable, and a strong university presence.Huntsville/Montgomery/Tuscaloosa, AL: Huntsville's got tech, while Montgomery and Tuscaloosa have colleges.Asheville, NC: Popular tourist spot, but competitive and pricey.Akron, OH: Affordable, but keep an eye on the local economy.Irving, TX: Part of DFW, so a big market, but prices are higher.St.

@Will Pritchett, we just had this same discussion a couple of weeks ago at our local REI group meeting.  

My recommended next step is to reach out in your local network (probably folks here on BP) and attempt to find a reputable lawyer with specific RE/LLC experience in your state/area.  

Louis offers affordability, cash flow potential, and emerging market opportunities but also presents management challenges, unfamiliar markets, travel costs, local regulations, and crime rates.