Might want to break that out into several smaller posts, not sure how many folks would be willing to make the time investment to read the whole thing all at once.
Another thought would be if your grand parents don't want you brewing in their house, then either get their permission or move out?
Do you really want to disrespect them and yourself by hiding and being dishonest? What good can come of that?
Dang, idk if I can agree that 1 chronical one ups 2 buckets lol. Cleaning tonight and filling tomm morning and idk what you've got in that mug but it looks killer!
After an inch or so of wort was in my BB, I positioned the tube to whirlpool the wort and poured in the dissolved priming sugar. Seemed to work pretty well.