gaining lean mass is going to depend more on diet than your workout.
at 180lbs why are trying to put together a program that someone 100lbs more then you and 10+ years more experience than you would do?
i assume those numbers mean the number of sets. how about the reps? and at what percentage are they done?
what is your progression plan?
is there going to be any mobility work done?
what about prehab work?