If you manage to get all cards before the event ends, I recommend that you stock up on Cards Reveals which are 100 Shards each. That's just me doe. I don't think the SR Wild Card 1s are worth it. I however managed to get all three cards with a +7 boost.
PeroPero Seduction
Shunnosuke ID: 127088
You can also get Ex cards, which are pretty cheap at 20 each and throw them at Kurito. They have the highest point value in game iirc.
This is probably the best thing to buy since its only 5 more then a sr 1 and worst case scenario you'll get a sr3 wild from kurito for it. Reveals are worth it if your really low on them probably but you could always feed a lot of ex wilds at a time, 2 is enough to get card reveals or puddings. Also you could do 8 at once for pretty good odds of getting the Sr from kurito, its the same bracket as 10 rgatcha and 7 glasses.
Also ex wilds are the hardest thing to get in the game, max of 1 a day from quest and you cant buy them, so that's gotta be a factor.
After I get the last card (1k) I will buy as many card reveals as I can... You can never have too many of those!
Card reveals for 100 or EX Wilds for 20 to toss to the squirrel? What do people think?
Just threw 5 Ex cards at Kurito (with some random stuff to make it exactly 7.1k as that was the wiki entry), as I still had one liqueur left from the three we got during the event. Got a CR and some R-gachas (I think 5, didn't check my exact number of R-gachas) on a supposed 4 hour wait. So that was basically some free R-gachas compared to straight up getting a CR for 100 points.