I was thinking of renting for $1900 a month for 20 years, after 20 years the house would be their's, has anyone else done this type of for sale by owner?

Schedule E typically caters to rental income and certain types of passive income, while Schedule C is tailored for reporting profits and losses from a business or self-employment. 

Like Stephen said figure out what type of tenant you are looking for.

Just to be informed what are the best type of referrals mortgage lenders look for or want?

Ultimately it is going to boil down to personal preference and what types of rentals you have (As well as how many).DoorLoopStessaLandlord StudioRent ManagerAnd of course the tried and true - QuickBooksAny of these will work for simple accounting/bookkeeping but some will excel depending on if you have short term rentals vs long or a lot of properties.

Golf cart license are being restricted due to to many people, sinking foundations- either to close to unrestored sea walls or not enough pilings or fill dirt not allowed to compact, off grid experience, check on sewer and water infrastructure- when the water pump went out, the island shut down, the islands systems are being overloaded, what type of experience and thus rental rates are you shooting for?  

I think each type of lien is different in each state (HOA vs.

Those are first come, first serve.

You can ask your agent for referrals or ask your agent to put out an agent to agent broadcast searching for the type of contractors you need.

To minimize risk and capitalize on different market conditions, consider diversifying your investments across multiple markets or types of properties.