18 would be perfect
I rarely do a bicep regimen like this. I simply did it to "jumpstart" them because I had been neglecting them or half a$$in bicep workouts more often than not.
My other muscles are pretty much up to par for what I want (minus legs), and considering I am in a cutting phase right now, I do not think I will be building anything substantial until after my cut is over.
My emphasis now is to get lean and mean:
1. for my trip
2. to easily make weight and utilize the most muscle in an upcoming powerlifting meet (push/pull)