PPST - Texas Method for Powerlifting - Intensity day question

Hi, just starting this program and am confused about the intensity day. (searched the forum and couldn't find the topic discussed)

pg 142 "Squat 90% x 1 x 5, Bench 90% x 1 x 5 (with pauses), Deadlift 90% x 1, Back-off Deadlift 70-75% x 5 x 2-3"

now flipping to pg 145 week 1 shows ""Squat 90% x 1 x 5, Bench 90% x 1 x 5, Deadlift 90% x 1, 75% x 5"

week 2-6 show "Squat 5 x 1, bench 5 x 1, Deadlift 1 x 1, 75% x 5"

So my questions:

1 - in the first week we are doing 1 set of 5 reps at 90% of our 1RM for squat and bench?
2 - is one backoff set of deadlifts ok? or just personal preference?
3 - how do we pick our week 2 weight for 5 singles coming off a a single set of 5 on week 1 for all three exercises.

Thanks for your help,

Trevor

In Practical Programming for Strength Training percentages are used just to illustrate what the approximate intensity of the lift should be. They are not used to tell a lifter to determine what weight should go on the bar. The best source of data to use to determine your intensity day weights would be to base them off of recent, established 5RMs.

If you do not have established 5RMs there is a good chance that you are still a novice and the Texas Method is not the right program for you.

As James said. This applies to the backoffs as well; you have to see what works best for you at this point. As for picking weight for week 2 and beyond: I will generally cycle from 5s to 3s, to 2s and then to 1s which makes the weight easier to estimate.