This weekend will be my first brew day since Oct 2013 (back issues). So I am jumping in head first and lining up a 4 batch all grain brew day.
Pliny the Elder clone
Oktoberfast (sort of, with some REALLY old grain)
Andygator clone
English Barleywine (3 gal)
and maybe.... a second runoff of the barlewine.....
I have done 4 batches in a day, never 5, but generally start at 7am and done by 4-ish pm....
After not brewing for over a year.... the pipeline is almost dry!..... Luckily I had 7 batches in cornies ready when I hurt my back.....