Impact of Weight Gain/Loss and Experience Level:
I will also note that weight gain can be considered a tail wind to the progression. Meaning, you will have an easier time getting stronger and making a longer progression if you are eating enough to drive bodyweight upward during the program (i.e. also known as bulking or trying to add muscle, see caloric excess). This does not however mean that you should start heavier simply because you are planning to gain weight. The effect is typically not that strong and this is the best way to blow this program up - always better to take more time than less. Another tailwind would be experience level, someone much closer to their ultimate potential is going to run out of steam and have to settle for shorter progressions than someone with 6 months of training under their belt.
A headwind would be dieting or cutting. If you are really making an effort to lose weight and using this program you might want to start significantly lighter or make smaller jumps week to week (i.e. take 6 weeks to reach your current 5RM rather than 4 weeks). Basically the same 200lbs 5 rep max squat at a bodyweight of 200 is a stronger lift at a lighter bodyweight. So if you are dropping bodyweight, you probably want think about starting lower because your 5RM estimates won't be accurate as your bodyweight changes and to get a reasonable shot at progression you don't want to be starting too high (that said, the less experienced the lifter they might have enough tailwind from their junior amount of experience to override a fair degree of headwind from bodyweight dropping).