Flipping calculator Help

[Tzvi Balsam]

I have a property that will have income while I flip is there a calculator to take this in to account ?

If not I would love if some one can help me with an excel sheet to do the math or any other way thanks.

Numbers are as follows 

Purchase price 170K

Current Monthly Income  $2150

Current Monthly Expenses $1458

Gut cost 65K 

Planning permits and closing costs 20K

Loan interest 12 Percent on 75 LTV

ARV 1 year hold time (I am adding a unit) 365K