I would read the PPM carefully, and understand how the Syndicator is getting compensated. 

Meet with a local banker & schedule a time to talk with a mortgage broker, they'll give you at least a baseline of what kind of down payment options and rates are out there.After that, if you're still wanting to research more creative options, do some looking into seller financing (a very hot topic with good, and bad, advice out there), look into private lenders, and commercial financing options.If you're wanting to live in 1/4 of your quadplex, then conventional residential loans may in fact be your best option as you can purchase that with a fannie/freddy loan with very low down, and use up to 75% of the income from the property toward your own income. 

You could also take out equity if you want to keep the condo and use that for another investment, but I’d be careful about over-leveraging.

She doesn't care that you manage the property, she cares how you manage it.

Conventional non-owner occupied. 25% down.

Conventional loan How did you add value to the deal?

A few years ago I stopped coaching, I sold my print marketing company (Yellow Letters) to care for my wife.

As everyone said, 20% is fair for a manager to take care of a STR.

Networking with experienced investors, running the numbers carefully, and focusing on solid markets have worked well for many.

No one will care more about your success then you.