The good 'ole Denny Conn cooler may be your best option. Just assumptions made from your posts to date. Cost effective coolers in the 48 to 72 quart range, and bulkhead fitting and stainless braid. <$50 for the Mash Tun. FYI.
Conical Fermenter - Amber Lager Keg#1 Dunkel Keg#2 Helles Keg#3 Flanders Red Keg#4 Star San Keg#5 Star San Keg#6 Star San