An eGo twist type battery and a slim carto tank would be my suggestion.  The tank will feed the carto so it does dry out and burn.  Here's Grimmgreens video on the twist showing it with the slim tank at about the 5:45 min mark:
THE EGO TWIST IS A GAME CHANGER - YouTube
	
		
			
		
		
	
			
			THE EGO TWIST IS A GAME CHANGER - YouTube
				
		
	