re Jewelry - event earrings give high defence, good for Counter girls. Personal earrings are hard to get

Whaleship: not something to worry about as a relative newcomer. I am day at day 180 and I can finish Whaleship 1-3 just which is not worth me pursuing it at this time. There is plenty to do without Whaleship, e.g., each new event, each new reissue, evolving Knights etc.

Ampy: the text goes red if you try to use an Ampy and it would exceed the bonus limit. Some like to feed Ampies to their waifu, or to their strongest 6 and 5 stars. Put the defensive ones on any counter girls you have. I only give to 6 stars, then 5 stars in my main squads.

Future1/2/3: You will need a lot of storage space if you are planning on saving the 4*+s for Blooming, which means using some Flower Gems to boost your inventory. I only have 125 slots and save mine for 10+1 pulls. Who knows for sure when Blooming will come? From what I hear/read, if you are a f2p player, or spend only a small amount, it will be very hard to bloom any of your knights, but it is not as if we really need to. Most players with 360K+ should be able to consistently clear every map except the Defensive Battle ones and the Whaleship ones. I'd just enjoy the game as it is now, enjoy your 4 squads and the ones training up underneath, as I said before, plenty to do way before you need to worry too much about Whaleship or Blooming.