If you’re training the DL in a new way that you’re not used to, then I’d say you should set your TM to reflect that. On the other hand, I’m always a bit nervous about the PR set. That’s kinda what makes 5/3/1 so fun I think.
I wouldn’t beak-up the PR set into multiple sets if that’s what you’re thinking about. That kind of defeats the purpose of a PR set. How do you manage your sets of 5? Your PR set shouldn’t be much different. Personally and it’s kind of a mental thing, I can’t just touch-and-go so I pull, touch, reset & deep breath, pull, rinse-and-repeat.
You have to find what works best for you (touch-n-go or full reset). Put 135lbs on the bar or lighter if you have lighter bumper plates and do some higher-rep practice sets to help find a method that works for you.
I’m trying to recall the page number in the 5/3/1 manual where Wendler says “If things seem really hard, you shouldn’t do them, because they’re scary.”