Bodyweight besides Operator

So I already have pull ups in my workouts but during rest days or cardio days I recognize its so easy to recover from pull ups.

Same thing for pushups, the bench dosent affect how I do them.

My bench is not good nor are my pull ups 7. I don’t think it would hurt my strength to adding a little light bodyweight workout.

My pull ups and push ups need much improvement anyways. If I add in situps as well I think ill do more help than harm.

At what point will I know when to stop (soreness) or should I not start at all.