The first question I would ask is do you plan on brewing in the kitchen or outside? Inside I would assume that you are going to do partial boils and add to cool H2O to achieve 5 gallons, if so a 5 gal pot for boil is ok. I would recommend a larger boil pot if you plan on a full boil since you...
A while back I was looking into the same thing this is what I came up with
Bourbon:
6 parts corn (not malted)
2 parts rye (not malted)
2 parts barley (malted) 6 row most likely