I'm cooking a 21lb turkey and plan to have about 2/3 of the charcoal lit and about 1/3 on bottom unlit.  So my turkey will likely take 5 or 6 hours to cook.  Because so much of the fuel is lit at the beginning will I need more fuel at any point?  Temps will be between 25 and 35 during the cook with wind not being a problem.  I primarily do butts (minion) and ribs so I'm unsure about if I will have to add more fuel.  Also, someone in another post said their 20 pound turkey was WAY to big.  Should I have bought a smaller bird?  Thanks in advance for all your help.  This group is great.
John
	
		
			
		
		
	
				
			John
 
	 
 
		