The market appreciates 3% per year.Pay cash for one house and rent it for $1,500.

If maintaining cash flow is your primary objective, you might want to explore other options.

What may the property be worth then and how much cashflow might it be generating?

The price points do make it hard to cash flow even with the lower interest rate subject tos. 

Zillow is saying the house is worth $90k but recently a tree went through the back end of it and I was hoping to get some information on possible ideas or suggestions on what I should do about the situation.

It costs the same amount to replace a roof or furnace whether the house is worth $300k or $30k (assuming a similar size).

I put in total $70K and it's worth $100K now.

I personally would rather a few properties make up a sizable chunk of my net worth vs. 100 doors that appreciate a thousand a year.

It's still worth looking into.

You should setup multiple ways to accept payment.Our tenants have the following methods to remit rent (no cash) -1) Online payment sysem2) Zelle3) Bank deposit at Bank of America.4) Come to the office to remit funds.