How would you approach collecting a Paldean Fates master set? (for fun)

So my kid & I want to do a collecting project together and we love cute things so we decided on Paldean Fates. My question is: how would you approach this collection to maximize fun and minimize waste/frustration?

I ordered a single ETB to get us started, and it turns out our local card shop has the tins and tech stickers. Beyond that I'm thinking we should pool our cards from other sets and hit up some card shows to trade? Maybe we can pick up more ETBs and boosters, but I'm not really sure how many packs we want to rip as opposed to just going straight for the cards we need. Would it make sense to look for a seller with bulk cards from the set?

Aside from the big chase cards the baby shinies really seem like the hard part, because there are just so many of them. I'm open to buying singles but we might try to limit ourselves to a certain number of them (because it kind of ruins the fun for me to just fill a cart with the cards I need and hit buy).

We've been casual collectors for several years but this would be our first attempt at something like this so I really appreciate any advice you can give!