is AC in a sealed CO2 room enough without reflector ventilation

The room size is 5ft x 6ft with a 4x4 tray and 1000w reflector (I know this sounds crammed but there is room to walk around 3 sides of the tray.) The original design was to have a CO2 tank with regulator and a 8" vortex that would be used to draw air from out of the room to cool the reflector and push it back out of the room, keeping the room sealed. Instead, could I just use a 2 hose AC with no reflector venting in the sealed room? And are the 2 hose AC's reasonably quiet?

You could probably get away with the AC if you can keep the light high enough because even if the room temp is ok the light needs to be 2-3 feet or more away. Those in room AC units are pretty quiet I suppose but if you plan to add Co2 watch out - the one I got from Lowes sucks air out of the room even though it has an intake and an exhaust. That makes my Co2 generator come on more that it should. My next move is to get a split AC so there is no air exchange.