If it is to be added at the end of the title, then it should be fine according to me.
You can add related series playlist at
1. end screen
2. card at drop points
3. pin comment about it
Let's see other's opinions too.
The Weighted Score takes into consideration your channel's size and avg views per video, while the Unweighted Score doesn't account for that information and is more generalized.
Look at the Weighted Score for the most accurate prediction for YOUR channel specifically - so choose weighted but...
The title reminded me of one memory.
When I was little, it took 2-3 hrs for my mom to feed my meal.
One day my dad got so irritated that he scolded me and I cried and vomited everything. My mom scolded him for running her efforts. My dad did not interfere ever again .