Personally, I'd make him go for S Rank Sword, Regal Blade. Giving him a S Rank Axe as well as equip him with Axe would reduce what little speed average he has. Which is still bad IMO. Raven just have the right 9 Con to even carry Regal Blade since it just weighs enough for him, simply put it won't take away him fair amount of speed since Regal Blade weighs is 9. Plus, Swords>Axe due to weapon triangle.