Longer terms are available as this is considered a second home.

I co-own a short-term property management company.

With your proposed seller finance terms, you'd see serious negative cash flow for years! 

However, I will say, if it is a year payment, it is advisable to hold the year's rent in trust and pull the money out as each month's rent accrues, just in case there is a dispute during the term.

Can someone help me with terms? 

I'm in a position where I can using leverage over and over to buy more properties.There would be cash flow in my area because the properties are not expensive however they do not appreciate much and the cities around me are dying and not growing.What would be the risks of using leverage to buy an extensive portfolio?

The long term play would be to pivot to MTR/LTF afterwards.

Here would be the terms with the buyer:Sales Price: $315,000 (NOT worth this.

If long-term appreciation is a part of your investment strategy then Columbus would be worth considering!

If you have a lot of equity in the property and the loan to value is low enough, you could get favorable terms on a cash-out refinance.