I wouldn't underestimate the crazy addiction you will feel when you start running LN2.
A 20L will do fine for a nice smooth bench session but when you start pushing the fold....
and you will, you'll want at least another 20L.
A 35L is good for a one long ballz out session or 2 or 3 average sessions. If possible, I'd go with (2) 20 L containers to properly fill that void in your life
