I actually have to disagree with my head rep for once. I do agree that Beast can raise your BP and a preworkout MIGHT aggravate that. But that being said, I always run a preworkout on cycle and never have any serious BP issues. If you notice that you start to get headaches....I would recommend throwing in some cardio EOD to help lower your BP or switch to a preworkout that does not contain 1,3 DMAA (or just use a half dose for your preworkout).
That being said the upside is that you'll get a break from preworkouts. But the choice is yours. Just always realize there is a risk/reward equation when being on anabolics.