I have very good success with 5 over 5. and I don't insulate them. But Wisconsin may have consistently lower temps than UPS NY. You could try running 6 in the shed and 6 out. Sometimes I think we're better off trying things ourselves, no 2 beekeepers think alike. I don't know how big your shed is, but if you have 60 nucs in it you may have the opposite problem and have to cool it down.