Yeah, I agree with Lugia. You're on the right track, but you've got some modules that might not be the best use of time, space, and money. This kind of reminds me of my original plan, which changed drastically as I started actually putting it together. My advice would be to go slow. Start with a sequencer (doesn't have to be Eurorack, but could be a Beatstep Pro or Korg SQ1), something like Plaits, Maths, and Veils. Then see what you are missing. Need a filter? Buy that, and then repeat. Need a big a** button? Buy that, and then repeat.
Unless you really need the phantom power of the Little Mikey, the Doepfer A-119 is an external input/preamp with envelope follower that can be had for about $70 used. I kinda hate working with Disting, but adding one to a small rack is a decent idea. It will help you understand a bunch of different functions (albeit, not in a very fun way), and give you some ideas for the next fully featured module you should buy.
Have fun and good luck.