I think the main issue is believing that unsecured prom notes are Guaranteed. unless I saw the note and the note stated that ( which I highly doubt) the return of funds and payment of interest solely rests on the full faith and credit of what was invested in and the sponsor..

my research shows 2.99% fee with Debit or Credit card to tenant if they pay use these forms of payment.

To start your first BRRRR investment, define your investment criteria, focus on submarkets with favorable cash flow and rehab costs, build your team, analyze deals using tools like BiggerPockets BRRRR calculator, and start small.

Run a credit/screening report on yourself.

Also having a higher proportion of revenue generated through the residential component of the building does make financing easier. (3) The exception to the 80% rule I abide by is when the commercial space is leased to a credit tenant with a proven & sustainable business  or where the space presents the opportunity to attract a neighborhood amenity F&B operator (this is most beneficial in instances where you have a larger localized portfolio where these commercial tenants can positively impact the value of your overall residential portfolio).

So if the appraiser determines for example that the average rental amount for the area is $1,500 then the mortgage, taxes and insurance (and HOA if applicable) need to be at or under $1,500 to get the most favorable terms. 

Wholesalers typically do not carry Errors and Omissions (E/O) insurance, so even if the court rules in your favor, they might not have the financial means to compensate you.Furthermore, ensure that a reputable title company handles the transaction, as some companies may cut corners.

Can you give a little more insight on your credit?

Buy them well so you can refinance out the downpayment with a Home Equity Line of Credit with lenders that will do that for you and go shopping again.

I have a priority credit line on my brokerage account that is now > 1% lower interest rate than my mortgage.