Next I intend to cross check the calculations (esp. taxes) and simplify the layout.

Easements are still your property and all zoning and lot requirements/calculations would include the entire lot including easements.

An investor friendly agent can do all sorts of helpful things, like setting you up with a search for properties or connecting you with folks who have recently done deals like the ones you want to do. 6) Consider analyzing a deal or two in your local market, just for practice, with a free use of our Rental Property Calculator (or other calculators).

Hey @Nicolas Munoz, I've always done it manually using my Excel calculator.

I downloaded a few Excel BRRRR calculators but created my own because I wanted to understand every calculation, factor and lever to maximize my investment.If you are going to buy from a wholesaler, it helps to have a relationship with a few in the area you are looking for. 

Any other details/calculations on this would be appreciated.Like many my home sticker price is up, and I'd like to tap the equity to make a series of high yielding, diversified investments.

On top of that, if you are planning to use STR rents for the DSCR calculation, you will need to show that you have experience either through 12 months of STR income from this property or owning another STR. 

In the free version it appears, at least by the way I entered them, it seems like it is auto calculating significant expenses for them but I am unsure of the assumptions or the way to edit these?

You should find a reliable rehab calculator and learn how to use it to evaluate the true profitability of your flip.

You should calculate projected rental income and see how it compares to your monthly payments of $4,210.31.