When deciding what to do with an investment, sometimes it helps to just make it a math problem.
-Call the company and find out the schedule for surrender charges--what will it be next year, in 5 years, etc.
-Right now you know it is $9,000. It is okay to cash in an investment with a sunk cost. If it would be 10 more years before the surrender charge is zero, and that is your goal, calculate the expected value of what you would get cashing the insurance policy in then vs what you would get if you cash in now and invest the $16,000 for the next 10 years. Of course you can never know what the market will do, but you can make educated guesses. And right now you can still get 4% on a guaranteed CD.
I would probably go ahead and cash it in, just to be able to quit thinking about it. Also of course consider if you already have employer provided insurance. The most important insurance for you to have is probably disability. If you die your spouse will receive SS for each child until age 18.