Magic the gathering: Commander building deck?

I'm thinking of making a Commander deck based off of Gwafa Hazid, Profiteer, and i was wondering if i should be looking for certain cards that would be good with him. I am thinking of doing a stall and kill strategy. Where i prevent and stop everything the opponent can do then kill him. Do you think i should keep that idea or scrap it for a better one? once again what cards would be a good combo with this commander?