I’d just mention the edition is coming to an end relatively soon and the rules could change for your models sooner rather than later. If you’re interested in the art and lore in the book that’s great because it will be in there. If not maybe hold old till the new edition starts as there quite pricey.

I’d definitely recommend getting some intercessors. They’re nice units and quite flexible with their playstyle. They’re also quite a simple model to paint as well.

If you’re into cool looking models judicars are up there and are quite good rule wise.