I've plugged in the numbers into calculators but it doesn't seem right.

I currently own one side-by-side duplex in Euclid (purchased end of 2022), and am looking to eventually buy more rental properties, and possibly get into medium term rentals.

You may want to look into a HELOC instead

It is all a stupid scam to get you into buying their latest new program. 

When they don't take advice and call it criticism or call us mean, what they are really doing is putting a light up into the sky for all of the gurus to come collect them and their money.

Sure everyone wants to make money but it can feel a bit empty when not giving back into something larger then yourself.

I want to get in to real estate investing and this would be my first time.

What would be the best strategy or suggestions to pay this off while investing into my wholesale & flipping business?

A better question is what happens if the SELLER can't close in that scenario.Accordingly, many assignment fees are paid in 2 stages... 1 at time of assignment (often into escrow) and the balance at closing.

Medium term rentals would be the safer option in my opinion due to the uncertainty that comes with STR's, your cashflow would be lower but overtime it would turn into a solid source of passive income.