Initially this was for sale before the pandemic and had several showings, but suddenly this went off market from one day to the next.

I would like to know if there is anyway I could get the home ownership changed without initiating the due on sale clause?

Does the private lender cash out with a guaranteed return on their initial down payment (percentage or dollar amount) once there is enough equity in the property?

to get quick initial cash on cash while I am checking out the listing and then if I like it I do detailed analysis with excel if I have to send it to my LPs.

Generally, I do the initial screening myself and verify with transunion smart move.

It will initially have negative cash flow at high LTV (80% LTV)

I was initially planning a BRRR since it is currently setup as a duplex (fully gutted to studs). 

That estimate gets me to make an offer then obviously he will have the rehab team come in and give a detailed SOW, but I find his initial input to help out tremendously. 

I am a new REI and am in the process of scheduling an initial CPA consultation.

I respond with "have you reviewed the requirements which include.....blah blah blah) and I rarely hear back from the majority of folks who initially sent a request to view the property.What you are doing is correct and a good timesaver to weed out those who do not meet your rent requirements.