I would get an 80 or a 140 quart. Lots of guys use a 60 qt. mixer to make batches with 50lbs of flour, but it is overloading the machine and overfilling the bowl. If you plan to use 50lbs. of flour/batch, an 80 qt will work better. We use a 140qt. hobart and mix 100 lbs of flour/batch. For the...