If you want something to just work out of the box, the kit linked above is the only one on OCUK that's 6000c30, which will work at the most optimal dividers with infinity cache (I'm not sure if it's considered 1:1 or 2:1 with AM5)
There are a couple of 6400 or 6600 c32 options at higher prices, but that will depend on silicon lottery with the IMC, otherwise you'd probably just have to manually tune to ~6000c30.
Whatever you do, definitely 2 sticks as outlined above