I've been brewing extract for about six months and thinking about going all grain. My brother gave me three 15.5 gallons kegs. I wanted to cut the top off and also add ball valves and thermometers. Basically having a HLT, MASH, and a Boiling kettle as my set up. My question is is this to big of a set up for five gallon batches? I don't see myself doing 10 gallons batches but you never know. Should I invest in auch a set up? Your advice would be truly appreciated. Thanks!