You can still maintain an open feel, while also not doing something that would be too non-standard for a typical single family home (again, unless that's what you're going for).For reference, we did a house many years ago with an almost identical kitchen/lower-level floor-plan, and this is how the standard wood railing looked:

Perhaps @Bill S. could shed a little more light on the local tenancy law.We have wording in our leases that tenants are required to maintain the premises at a temperature of at lease 12C (~55F) even when they are not present.  

And when most people sell the RV's they will continue charging the lot rent so you can cover your costs associated with maintaining the grounds, infrastructure, etc.There are strategies to sell more than one home per year - check out using a Licensed Mortgage Loan Originator and also the Rent Credit Program.  

A bit about me:I grew up in New Jersey, went to college at Villanova University near Philadelphia, then studied a bit outside of the US in Italy, Shanghai and Switzerland, ultimately ending up in Geneva, Switzerland.

I would imagine you would need to match inside finishes while maintaining the ancient outside looks?

Instead of trying to sell this and get beat up by some buyer only to make a 15k to 20k   why not make it a case study...

I plan to study and learn that market so I can start investing in TX, while my business partner continues to invest MD.

With the BRRR method if you buy right, hit your rehab budget, and maintain adequate operating reserves, you will not run out of capital.  

Also, the tenants know you have to maintain the property to high standards and won't be shy about demanding repairs constantly.

Hubby's studying notes, so that's a possibility.