I am taking care of her as far as daily expenses (groceries, transportation, etc), so looking to leverage her current investments to increase wealth.

House hacking is not really in the cards with my family situation at the moment.Note: I live near Portland in Lake Oswego but am open to considering any Market within 3-4 hours away.

it behaves like revolving credit card.

And the trading/activity that I've seen in Iowa for tax certs is basically person to person, from people that are active in the space, kind of like trading baseball cards as a kid.

Its the other things in their life you got to look out forhave him email you any documents so they are wired, that would give you a really good jail-time card to play in case you have to evictI been hiring these "subs" (aka drywallers) for years and years and the best ones with the hardest working guys, end up with the IRS chasing them (they pay their men in cash) .

When the home sold, agents and title were paid and the credit cards were all paid off I had just over $100k in profit.

Call your credit card companies and negotiate a reasonable rate for additional buying power. 

I'm in the process of obtaining a credit card to start building my credit score but after talking to lenders that will take me some time.

I prefer debit cards and cash.

I think I would introduce myself and explain what I do and what I expect from my tenants and leave my card with the neighbors.