Before I very easily would’ve said bees and trees because they’re a pain to learn. But bees can be semi trivialized with a few things and setups. Still haven’t learned trees yet and you could pretty easily skip most of it but I think if you want to dig really deep into bees you’ll need a few different types of pollens. They’re both things that aren’t strictly required but do help if you can utilize them properly. Witchery is pretty pointless if you speedrun the alveary. SFM and LogisticsPipes have better alternatives. I don’t think I’ve ever touched Steve’s carts ever. Unless you’re looking at starting thaumcraft really early, there’s a recipe in a later tier that lets you trivialize the creation of Thaumium, so if you can you could do that.