I think you are 100% overthinking this.
The template is simply that, a template. Fill out the information with blackironbeast, with your true 1RM (DO NOT OVERSHOOT). Then PRINT the template.
If your 5/3/1 sets feel too light, add weight. If your 5/3/1 sets feel too heavy, drop weight. If your accessory sets feel too light, add weight. If your 5/3/1 sets feel to heavy, drop weight.
After a cycle, increase your 1RM weight or TM (depending on the individual and their progress) by 5 or 10lbs.
This is only as difficult as you make it.