3) Check out some of the local meetups that you can find in this forum!

Know your local laws and the federal laws.

I would utilize a local bank, such as Hills Bank or Green State, they have the ability to utilize "in-house" lending and can be a bit more aggressive in how they lend given the potential forced appreciation.

Might as well just invest in your local market at that point.

Broaden the scope of your search to encompass alternative property categories or localities that hold comparable promise for investment or house hacking.

Anyone have recommendations on a local bank or credit union to use for a refinance in Baltimore?

Several factors impact ADR, including location, seasonality, supply and demand, property type and size, and local events.

It's a good idea to talk to a local real estate agent and a money expert.

Also, talking to local mobile home dealerships may give you some insight into the process and more information. 

Social media can also be super helpful, general posts to your sphere or joining local community groups.