I haven't seen any discussion on this soul combo, so I'm worried it may have been a poor choice? Can anyone tell me if my assumption is correct?

I went with this combo to start combat from a distance, then finish quickly up close. I went with assassin mainly for the stealth, but I find I'm using more assassin melee abilities. If this soul combo is bad, can someone please tell me what I'm missing out on if I went with something different?