Well with 5 pounds of grist, the mash volume would be 5 gallons. With a 10 pound grist, the volume would be 6.4 gallons. In each case, more than half the volume of the MLT.

The issue with a smaller diameter pot than the MegaPot, which is 12", is the inability to get an element across the diameter.

With 8 gallon pots, I've also leaving the option for 5 gallon batches, however that isn't an important design consideration.

The pot is 15" tall, so a little more than 1 gallon for every 2" of height. My range of mashes would be approximately 10-13" in depth.

My goal at the end of the boil would be about 3 gallons, to account for losses, accounting for a 6" depth in the kettle, easily submerging the element.

I'd consider an MLT that is under 12" wide, but the BK element needs some room.