This is the same whether we are building a "double wide" that gets put on blocks or a modular home set by a crane on a foundation.One of my last projects before changing industries was a 2 story modular home that was built on spec...and then sold for roughly $1million dollars within a few months...

Soon closing on a property property cost $458k and the closing cost is really high we are doing FHA mortgage they are charging 2% of the loan plus application fee and mortgage insurance on closing for the amount of $7k and plus monthly mortgage insurance... in 2020 there was not just a thing 2% of the loan on mortgage origination loan fee! 

She said, she needed this month to get things situated etc etc she confirmed this was her last month through text.

They may be living there for free during the foreclosure/eviction process, and you'd still need to cover your expenses on the property out of pocket, and foreclosures can take many months or even years, and the property may come back to you in much worse condition than it is now.

Getting about $6500 positive cash flow a month and makes, $,15,000 .

A full-time position just hasn’t come my way yet.I recognize that in theory, monthly mortgage payments shouldn’t be an issue since I’ll be househacking, I would just rather comfortably afford the mortgage if everyone somehow decides to move out at one time.

What I have seen people do is note the month/address in the Venmo when the tenant pays.

So if you make 10% the first year on $1 of equity (so 1.1x your money), you need to make 10% off the 1.1x starting point (so 1.1*1.1 = 1.21x) to maintain a 10% average CAGR across the two years.In your example, if the $800 per month is after interest, then you made a 38% return (CAGR) for that year ($800*12/$25,000).

I did live in the single family while remodeling my primary and that worked great for the few months I was there.

That is what my wife and I did and now its a rental that generates a couple hundred in rent per month.