100mm vs. 107mm - Atomic Backland

I have an opportunity to get some Tecton 12s for a good price, but don't have skis yet. I don't want to get a brake now and then need to change it when I go to mount.

Hoping to demo / try both of the backlands or similar skis this year. Currently I ski Libtech Wreckcreate 100 for the resort. Any advice on sticking with 100mm ski for backcountry or should I go for wider width? This will be primarily used in Tahoe area.

Anyone skiid both and have preferences?