I find front squats easier to rep out than my typical low bar position. There's a lot of variables here, including (but no excluding others) work capacity, strength, leverages, diet. If you're just starting BBB, if just use the same movements for assistance for a time, but on opposing days e.g.
Monday: Squat 5/3/1, Deadlift 5x10
Tuesday: Bench 5/3/1, Press 5x10
(Vice Versa for Thursday/Friday)
The first change I'd make after this would be using stiff leg deadlifts/sumo/good mornings for 5x10 work as for many, high rep conventional deadlifts can hit the posterior chain too hard. Progress on any changes after running 2-3 cycles