I'm holding out for the 14.5 gallon SS fermenter they're giving away... Of course, I never win anything good, so I don't have any hopes of getting it... Would be sick to have a free one though... Would have to brew a 10 gallon batch just to pop it's cherry. :rockin:
For knowing when to dump the cake... I would probably use the same method I do now... Time... When the brew is at the FG, and it tastes ready for bottle/keg, then you can dump the yeast... I wouldn't do it before then. But that's just crazy old me...