If you want to keep them, make sure they are 100% honest about their intent, check zoning to verify they are allowed in that area, charge them market rate, and confirm they are insured to protect you and the property. 

Flexibility: Land contracts can offer more flexibility in terms of payment schedules and interest rates.Risks for Buyers: Lack of Protection: Buyers may have fewer legal protections than with a traditional mortgage, especially if the contract is not properly drafted.

I have found the CSA damage protection policy was worthless. 

I own properties in two locations over 2000 miles from home and thank my managers every time I talk to them for protecting my interests and putting up with day to day issues that I don't have too.

It might be worth going for the townhome now and keeping an eye out for multi-family deals down the road.

But also need to protect myself. 

its to protect personal assets and possible to set up a property manager 

I would keep an eye on things as you transition to Evolve as your manager.

LLC is just another layer of protection.

Experience with STRs - they at least know or can understand the extra steps it takes to make ready the properties, including photos (cleaners hate taking photos, I've found, even though it protects them from being blamed)2.