You can take 2 points from Vitality and put them into Dexterity if you want to use Gouth's Greatbow but you will also have to equip a bit lighter gear in order to mid roll.
You can switch the Demon Great Machete to a Large Club, Man-Serpent Greatsword or any other Strength you like.
Mace is your fast swinging weapon and it has the highest damage output with 50 Strength.