I stopped at stage 13 last time there was a stamina discount.
I need a LOT of Manyus to level up units before I will be able to go beyond there.
I did the gold bloom elixer event ~3 times the last couple of days and got two three so far.
That is enough to finish blooming my helper squad but I have 4 or 5 reissue units that can bloom as well so I think I am going to run it more this weekend.
I also did 2 10+1 rolls on the current event Gacha and got 2 5* Pomegranate and a few 4*.