I'm looking up 5 year CD rates and they're showing to be 2.1% at the highest ( https://www.nerdwallet.com/rates/cds/best-cd-rates/ ).
Lowest mortgage rate in past few years is roughly 3.66% ( http://www.freddiemac.com/pmms/pmms30.htm ).
I'm no mathematician but I'm not seeing how you come out ahead putting $ into CD when you're paying off more of your mortgage + other debts.
Perhaps you are avoiding the pay off mortgage option because you're afraid of another R/E market drop turning your mortgage upside down ?
This was my thinking. Also with a student loan still in loom. I'd get rid of that first.