I'd say try it and see how it goes. I've never done 5/3/1 and i've heard that its pretty intense, but PLP has active recovery benefits (i think) and if not i'm sure you will get used to it. You build reps up over time.
I've done the 25 rep method, TBT and i'm currently doing 10x3, plus 20-30m interval training three times a week while doing the "Waterbury challenge". I'd say that the training i have been doing is pretty intense, i'm doing over 110 reps a day (pushups, pullups lungees) and i'm progressing well with 10x3.
If your nutrition and sleep is in order and your not a brand new beginner, go for it!!!!