There's no set amount and no stranger on the internet can tell you what should work for you. 

First, it's your lease, so you likely know it inside and out, giving you a level of comfortability which no inherited lease ever quite has regardless of how well it's written.  

They can go to foreclosure at any time because the borrower no longer owns the property. 

I was planning to bills my own software based on my books, when I first saw houseflippingspreadsheet I decided that it was close enough to what I was going to build that there was no reason to replicate it.It's not exactly what I would have built (like you said the methodology and format is a little different) but it's definitely just as good, if not better than I would have come up with.

There is no magic way to build a ton of equity in a short time. 

-repairs and cap-ex can be the most challenging aspect for new investors, there are no standard rates that will work across the board. $200/mo is a safe bet for a SF of this size for cap-ex, and your repair estimate looks ok.

(Another option to the above scenario is to instead have the LLC lend my father money to complete the rehab so all the repairs are made in his name...but then the LLC would get no tax deductions on the rehab, plus my father would wind up paying interest on the loan and the LLC would incur taxable income on the interest of the loan as well.)I've said a lot here, but It would be greatly appreciated if anyone can give me advice on the best strategy to pursue...Thanks!

The monthly payment isn't going to get bigger, all kinds of crazy taxes to get out of the real estate eroding the payments you do receive every year and no opportunity to participate in appreciation. 

However in outlook 2021 Pro there is no way to go in options to deliver this email once every quarter.

Construction materials: Frame, no basement, roof: asphalt shingles, Floor: Carpet on stairs and bedrooms, LVP: Kitchen and living room.