Ok: is it beneficial to switch a specific workout on a week by week basis? Example: week 1 I'll do bench press, but in week 2 substitute that for incline press. Another example being: week 1 doing back squats then switch to front squats the next week, since they both are in the same workout family described in the workout plan.

Last question being I'm a bit confused on the way your supposed to do each workout. Is it:
2-3 sets of 1 rep(for feel)
3 to 5 sets of 6 reps (hard working sets)
then 2 sets of 2 reps of the last hard working set weight?