-My fiancée and I are planning on having our first kid by the beginning of 2026, so extra room would be ideal as we are somewhat limited in the primary residence. 

Then get a rider for extra coverage for liability? 

Also in case of fire or flood, I know a regular homeowner's insurance will have no problem covering it.I have been wondering, if the local regulation doesn't require it, why do we need pay thousands of extra for STRs? 

No, refinancing isn’t an option because of how we purchased the property.

We’re looking for Excel models to compare these options and calculate potential net worth in both scenarios.

With some more math, you’ll see that the extra amount in dollars is not that much compared to the total amount of interest paid.

We get an extra 3 deals a month from it.

Then sell on the side, extra pipeline for revenue. 

All of the above, but in a smart order:Get Prequalified First – Knowing your financing options upfront helps you move fast when you find a deal.

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.