I ALWAYS start with the end in mind, and after being involved in managing over 425 properties we have found hat the homes and properties that most consistently spit off cash flow and give you true mailbox money are the ones that have fantastic tenants that treat the home like it is theirs - and those tenants are usually in areas that the schools are rated at least a 5+ on Greatschools.org.

You need to structure the deal as follows:700k purchase 100k construction (deferred maintenace)800k total acquisition20% down consisting of two parts... 80k refinancable equity from your condo and a 80k seller note 2nd mortgage (your dad) Wrap up those big ticket deferred maintenance items right away.

Persistence and consistence.

Ideally, I'd like to take advantage at Airbnb'ing both units, but I am wondering if I should play it safe and long term the top unit to ensure consistent income and Airbnb the bottom unit.

Whatever you choose, you need to be consistent with your marketing plan. 

So you invest wisely and consistently.

My current portfolio mostly consists of duplexes and triplexes in the Greater Boston area.

If you stay consistent, however, the business will begin to grow. 

But you want to make sure that they are predictable and consistent, because that's a direct reflection on what you can expect to get from them in the work place.Get everything in writing and communicate expectations clearly People can't read minds.

So they go get a money order and deposit it.All it takes is training... train your tenants and be consistent.