Tried it today with the ten coals.... That was the key! Yes temp does rise quickly got it to 225 in no time ran at about 240 with all vents closed for most of the cook (Chicken Drums) they came out great.
No need for the water pan.... May need to try to seal up my lid a little better with some high temp silicone to keep the draft out. Overall I am well pleased and will now be making my second in the next few weeks or so!
Cooking Tri-Tip tomorrow and we'll see how that goes...