Probably not a bad idea. Wonder if my 10 gallon mash tun can do a nice beefy ris
Is it one of the tall 10 gallon cylinder shaped rubbermaid coolers? If so I just put 20 pounds of RIS in mine at 1.2qts/lb of grain. It was pretty maxed out pretty thick stirring. I accounted for a loss in efficiency and estimated 65% brewhouse efficiency. It ended up right around there.