Why not renew for ten years, then every year extend it by one more year. Best of both worlds and if something screws up, you have 9 more years to fix it.
It is like having replacement toothpaste ready for your bathroom. It is such a nuisance to go out and buy it on the day it runs out, and more likely to have a day without if you do not keep replacements ready.
It would be hard to make the case for 2x, but 10x?
This feels like a solid way to do it.