This would include doing mainly flips so i can get a solid return from that money or possibly even doing private money lending. 

One more thing, especially for people who don't meet my criteria, besides more deposit is required, I also do a interview with them, not interrogation style, more like a friendly conversation to figure out their situation.

I took a small private loan and bought my first home.

Perhaps you could consider hard money in addition to private money?

I used a private lendor to fund the re-hab (cash) and owner financed the purchase price (minus down payment) I have a bank account linked to Stessa and I see the cash deposit in the transaction tab. 

We all use private investors or NON/QM investors for DSCR but some again charge points and some do not because they UW the file (Mini-C).Most Bankers typically offer rate closer to PAR or less margin built into the rate.

I am confident that I will be able to refinance the remaining seller note principle with private money to allow me to hold off on putting more money in the deal.

I'm sure people would pay extra for some kind of "meal prep/private chef" type package in their living situation.You've got the right idea thought, but don't be afraid to reach...nothing wrong with dropping your price after a couple weeks if you don't get any interest.  

@Kyle CarterAsk about their communication style, does it fit with yours? 

I have found it is beneficial to rent your smaller homes with the program and your larger homes (same number of bedrooms) in the private market.