You’d take a kid to that event, but not let said kid keep the LEGO? Cruel… just cruel.
I’m not particularly interested in that series of figs. You should get 3 full sets, as the rarity breakdown in a case of 60 has been:
3 figs @ 5 / case (15)
6 figs @ 4 / case (24)
7 figs @ 3 / case (21)
I could swear Eurobricks was the one that usually broke down each series nicely, but I can’t find their reviews now… but here’s one of Series 16 that confirms this breakdown:
LEGO Collectible Minifigures Series 16 (71013) Box Distribution
Buying a sealed case definitely gets you your set of 16, but if you’re trying to feel bags and then return the 44 you don’t want, that’s a lot of effort… in the past, we’ve gotten several people together to do a draft (Series 9) or to invest in a case and split out the sets / just specific ones people want. If others want in on Batman figs, you could negotiate rather than returning…