I'd swap the Batumi and its breakout for a Maths, Batumi is great but you'll learn more with Maths and the attenuators are super useful. From there you'll learn which direction you want to go, whether you want more LFOs, or envelopes or whatnot. Jim will probably chime in and tell you to get a Kinks or a Links, I'd pick the former if I had to pick one but it might not hurt to get both here.
my tunes: https://stevehand.bandcamp.com/