Im also new to Eurorack. I started with the Mother 32. I can speak for Maths and Disting. Maths was also my first addition and was really tricky for me at first and I didnt really understand it...But at a certain point it clicked and I was just like "...woah....this thing is SO useful..." I am also completely in love with the Disting. Its so useful (especially for a small system) I think I might get another one.

someone correct me if I'm wrong, but I am pretty sure clouds is going to start to get pretty hard to find...So if you see one you should try to grab it quick.

I would definitely squeeze a multiple in that open 2hp.