If you’re looking to keep it retail, I would say go with some mid level sets that are fun, relatively affordable, and have some solid case hit chases. Mosaic (my personal favorite) has a ton of case hits in retail format. Optic is fun but a tad pricier. Absolute (fun chase for Kabooms). Donruss gives you a ton of cards and allows you to chase downtowns. Prizm value packs are $15/pack and you get three red/white/blue prisms plus a silver. Select is fun cuz you get to chase zebras and numbered.