Achieving a Good Baseline

It is recommended to constantly increase the number of repetitions or weight with a workout to continue to stress the muscles, creating an increasing gain. Currently, however, I am attempting to reach a baseline where I can perform all the exercises to a full 12 repetition set, with muscle fatigue. This will be my baseline, and from there I can see how best to advance.

Tuesday's workout:

Assisted Dips: 12r at lvl 14 (weight unknown)
Assisted Pullups: 12r at lvl 14
Seated Chest Press: 12r at 75lbs
Seated Overhead Press: 12r at 50lbs
Cable Crossovers: 12r at lvl 4 (weight unknown)
Seated Leg Press: 12r at 170lbs
Standing Calf Raises: 12r at 50lbs
Glute Extensions: 12r at 75lbs (each leg)
Seated Flys: 12r at 50lbs
Seated Rows: 12r at 125lbs