Destiny Child - Get your 5-star child before maintenance break

Dear Destiny Child fans,

I'm late to post this post, as the 4 5-star child summon chance up is a good way to get your 5-star child in the summon. The chance is so low in normal crystal summon, that any 5-star child is good for me. I got my all 3 important children (Syrinx - excellent child, current meta child. Blue Olga - also an excellent child, also current meta child to stop attacks and delay enemy drive-meter, attack is strong and also a good debuffer. Eve - excellent water attacker. Jupiter - just so so, not good, can be used as fodder for 6-star summon)
This event will end on end of 13th March 2019, right before maintenance. So I go through all my Story Mode to get all the crystals I can muster to summon. I got x2 Syrinx, 1 Blue Olga, and x2 Eve out of several x10 summon with crystals (7 time I guess), which I think is acceptable

Maintenance break is ongoing, and new event is coming up. I have no experince in this event, so I have no comment.

I have prepared my child in many manner, and hopefully can utilize this event properly from the start, unlike Ragna-Break that I join in halfway. I managed to get 320K potato chips (331K chips to be exact, bad RNG force me to buy another reset) and got all the rewards from dungeon with a total of 4 resets and 28 extra card open (total of 1520 + 840 crystals). So far only got 1 5-star child (Lost Maat) and the others are mostly 3-star child and several 4-star ones, not really worth the 30 crystals opening them. Hopefully they reimburse the potato chips (with crystals, fingers crossed)