brewing badges above 20 gal

I have a 15.5 kegs in my brutus. I am planing to aquire 2 tanks that are 75 gal. I will like to make 60 gal badge. so I can make svereal badges in 2 days and mix them up.  Dont know what will do to an already started process. So If I can make a bigger and les badges  is best.

I could add water after my boil but dont know how to program this and also scale up a recipe.

Any light thanks

Charles

I meant Batch