Why can’t we tell you everything is viable…even if it is true?
Try:
First Weapon Setup
Main hand-Sword
Off Hand-Axe
Second Weapon Setup
Greatsword
This way, you get the mobility of Sword’s leap combined with the power of Greatsword when you get up close.
My usual combo with this is
Savage Leap → Dual Strike → Whirling Axe
then switch to greatsword and → Arcing Slice → Hundred Blades
This combo might offer you a good mix of mobility and power.