You gotta adjust your lifting to the RBR's program. Some weeks Mondays and Fridays are hard, others Wednesdays are hard.
If you DL i recommend to do it on a Saturday or Sunday when you are not squatting. Still you gotta go by feel.
Bench Press, if you use Dumbbells you can go as heavy as you want since you don't do a big back arch as compared with a barbell. Plus the weight in DB bench is less than BB bench due to greater ROM and higher instability.
For abz do all kinds of different stuff on different (L-hold, leg raises, Ab Wheel, Decline abs, abs on the glute ham-raise machine, planks). But I never when to failure, if more than 15reps, then I would grab a 10lb plate and put it behind my head.
p.s When I did the RBR I trained 5 times a week, 3 days squatting and some light Olifts. On the other 2 abz, chins, dips, and curls. If you can train more than 3 times a week do it.