I would suggest setting "instabook" to "off", allowing one of the more flexible cancelation options, and having a minimum stay in line with your local ordinances.

Let me know if you’d like specific product suggestions—I’d be happy to help! 

I’ve previously used my equity line, but I’m in the middle of remodeling and can’t use it now.

A professional home inspection can help you avoid costly surprises by uncovering potential issues before you buy, renovate, or rent out a property.Key Areas an Inspection Should Cover:✅ Roof – The home's first line of defense.

As a first timer, I'd avoid anything built before the 1960s that could have cement sewer lines, knob and tube wiring, etc.

Any information you are willing to share about past projects from addresses, scope of work, estimates, line item breakdowns, materials costs etc.  

My father took out a $320K home equity line of credit (HELOC) to invest with my brother and I.

Just curious, are you lined up an agent in that market and also connected to a lender?

The investors I work with find that builders are able to incentivise their product to keep it moving and do what they do best. 

It does appear that we need more information about actual ability to pay the rent but in reading between the lines it appears that there will be two more adults living in the property, so we have more information to gather.