Could use some Champion advice

I've got a good run with the champion going. My questions are mainly around linking weapon abilities together and weapons to use. Stone Fist has a grim enchantment on it and I have augmented it for speed. I'm tempted to start upgrading the axe and using it instead as a primary or using it as secondary. I can hotswap if I need though.

Any input is really welcome. This class is new to me.