Im about to attempt a BIAB(brew in a bag) of a the centennial blonde recipe as my first all grain beer(5 gallon batch). I have some questions about the technique to doing this. I have a 7.5 gallon turkey fryer pot Ive been using to brew. The recipe calls for 8.75 lbs of grains. How much water do I need to use to steep them in? I doubt Id be able to put in all 6 gallons or so with all the grains in the pot. Would it be alright if I just added water after the steep to the pot for the pre-boil water volume? Also, should I sparge the grains after steeping them?