been farting around on my Legion Courier and was making plans for her takeover of the Great Khans but the wikis are giving me some conflicting information on some things

for Aba Daba Honeymoon, are you required to teach the two cooks how to make all of the chems (meaning one cannot complete the quest if they cannot meet 50 Science) or is it optional?

for Oh My Papa, Im confused at how far into the quest one has to go to just get Papa Khan to name me as his heir? Will he automatically say so anytime I enter dialogue with him as long as Ive completed We Are Legion?