You should also note that these subs will eventually undergo a name-embedding upgrade next year. Given the long-term horizon of a custom sub you can focus on something else and use these name-embedded versions when they are ready. I haven’t included Khan Q ST4 in my sub, but I plan to still see what benefits I can get from it down the line, especially after the coronavirus is over.
I would recommend giving it some time. Set aside in your schedule some time to pick modules, think about what looks good, pick those and put it away. Later, look at the modules again, review & continue to go through more items.