If you are an LLC, then if you use your personal credit card, you would then have to pay yourself from the LLC for what was purchased on the credit card, and you personally would need to provide your LLC with a receipt.  

Begin with small, easy-to-manage homes like single ones or two-family homes, or try house hacking to help pay your mortgage.

Wayfair pro line has excellent light fixtures and other items, that would look great in a STR rehab and help keep costs down as well. 

And if you do it right you'll never pay the tax.  

Also u have to try to make sure they are paying their suppliers.A few years back I was building a housing subdivision and my underground guy was giving me pause.and So we checked with his pipe supplier and his Gravel supplier..

I have a photographer lined up already to take professional photos of my place.

I'm not familiar with your city but I've seen similar group homes pay up to 5x the standard rent and sign longer leases like 3-5 years.

STR in those areas do well year round because of fall colors and ski resorts and snow mobiling if they are on a lake, but on the flip side you are paying significant more because they serve dual purpose.  

Don't think I will be surprised with anything I find out when dealing with people in this line of the business.

He basically charges $900/month, but if the tenant pays in the 1st, they can pay $875.