Recommended routine like this one?

Hello to everyone. I've been training with this routine: https://www.muscleandstrength.com/workouts/summer-strength-4-day-strength-split for some weeks and I like it a lot because it focus on few reps and sets but very very high weight. With this I've achieved a quite satisfactory level of strength in bench press and I'm quite happy with it

Problem is that I feel like it misses on biceps and abs. I think I haven't trained them in a lot of time and this routine for some reason doesn't have them

What is your recommendation? I'm in the mood for something similar (low reps and a lot of weight), its a lot of fun and excitement training with this.