This initial negative equity position consumes the initial cash flow.  2) the addition of the adu makes the property multi family and likely makes rent control apply.  

My goal is to live in the home during the winters, maybe 3-4 additional weeks for vacation, then rent it out to help cover the mortgage the rest of the year.  

Your best route might be to buy a 2 to 4 unit property that you can live in and rent out the additional apartments.

@Ryan VienneauAre they able to set-up your credit cards as additional "accounts payable"?    

Additionally, the fact you might be negative cash flow in Texas will give you more flexibility by renting in Portland.  

The only additional thing we do is send them to collections.

Additionally, regarding the legal structure, an LLC seems to be the most suitable option for our situation.

Use a tiered approval process to give them control over larger expenditures while enabling quick resolution of smaller issues.2.Proactive Maintenance: Implement preventative maintenance programs to reduce costly emergency repairs and extend the lifespan of property systems.3.Monthly Reporting: Deliver detailed monthly financial statements that outline expenses, rental income, and ROI performance.By handling their funds with care and providing transparency,  trust is built with owners, ensuring they feel confident in the relationship.Making Tenants Feel HeardHappy tenants are the foundation of long-term occupancy and reduced turnover.

Tribes might even provide additional incentives, like grants or infrastructure funding, to encourage investment.

Outdoor storage, moving services, additional parking.