What sort of MTB?

Sounds like a hard tail XC bike, or something like the salsa cutthroat would do the trick.

The more trails you plan to ride vs gravel/forest roads, the more a hard tail XC bike is the better choice vs a cutthroat.

A gravel bike would work fine if you were sticking to just gravel or forest roads. But wouldn’t take most gravel bikes on single track. It’s just not fun.