Finding an area will depend on what you want and are will to do.  

It depends on a variety of factors if you sell with a realtor that will be about 6% gone if you have prepayment penalties on a loan that is something to consider if a buyer asks you to pay for closing costs that could be another several thousand dollars. 

Depends a lot on how you are buying in the 1st place.

Depending on your strategy, it will depend on which calculator you choose. 

value add depends on how you can raise rents... could just be as simple as raising to market rates.

The answer depends on your market.

It depends on the quality of the lawyer and their hourly wage.

Depending how much you're outsourcing for the rehab, the speed of project may vary. 120 days is a good target but if you can get it sold in 90 days from the purchase closing date, that's solid.

@Gary Schiefelbein It depends on how passive or active you want to be.

That in large part depends on your income.