Switching from pine pellets to LR4

New cat owner here trying my best to not make my new bestie angry with all the change.

We are DINKs so we went a little overboard probably and 2 weeks after getting a cat we got a LR4 bundle with a stock of the Great Litter. We got a bag of pine pellets from the shelter so that’s what she has been using so far but I’m looking for a “litter box transition for dummies”. She’s pretty confident and she’s watched the cycle of the LR4 and even came for pets right next to it while it was running. We have her old litter box still next to the new LR4 and put a couple scoops from the old litter box in with the new but I’m just trying to be prepared if I’m missing anything.

TIA!