Due to my schedule my current routine consists of two workouts per week using 80-85% 1RM.

Monday

Squat 6 x 3

Dips 6 x 3

Chins 6 x 3

Friday

Deadlift 6 x 3

Incline Press 6 x 3

Barbell Rows 6 x 3

My question is which progressive overload is optimal:

- Increase the weight used by 3-5% for each workout using 6 x 3
- Increase the reps to 4 keeping the weight constant, i.e., 6 x 4
- Leave the weight the same and use 5 x 5 or 5 x 4
- Increase the weight and use 5 x 5 or 5 x 4.