Loan option question

[Candice Menard]

Situation-I am using a non-recourse loan along with my solo 401(k) funds to purchase a rental home.

Borrowing-130,000.00

Loan term options

1. Fixed rate20 year loan 6.5%

1. Variable rate 25 year loan

10/1

5.9%

1. Variable rate 25 year loan

5/1

5.5%

1. Variable rate 25 year loan

3/1

4.9%

I am planning to pay an additional $500.00 to $1000.00 towards principal each month.

Question-Would you mind giving me an opinion on which of the 4 options would serve me best and why?