I should be in a position to purchase and rehab the property with a combination of my cash and private lending.

On just the pro part - it's totally free and if you have a combined purchase of greater than 1500 dollars they will bid your purchase out for discounts.

Some of them charge the sponsors, others charge the borrowers and still others have a combination of factors for their fees.

Tenant is currently using the garage for storage and laundry (washing machine and dryer are his). 

In my market, dish washers are extremely common.

Am looking to buy something in the Tulum area that will be used as a vacation home but also rented out via Airbnb (mostly rented out for a while as we’ll only probably be able to go down there 3-4 weeks a year combined max for now). 

I'm only familiar with DC's rules on primary homes but it does sound like you're trying to combine a hotel with a primary home Airbnb without following the rules for either.

Most recent one I was looking at was in Cleveland Heights that was packaging 2 MF properties but the RE taxes in the combined proforma only had the RE taxes for 1 of them.

It appears you are trying to combine 3 different strategies together.1.  

Sink maybe included13) Appliances are $2,500 for stainless stove, dish washer, microwave, and fridge.14) Flooring: Hardwood at $5.50/ sq ft or $2/sq ft for refinishing.