One thought to keep your GAS in check is the fact that if you buy a less expensive module as a means to approximate what you really want, it will cost you more in the long run. I go through this occasionally. I buy something fairly inexpensive because it gets me somewhat close to the sound I'm looking for, and six months later I am selling it at a loss because of the sound or ergonomics/user interface, etc. Save up money to buy what you really want. And go slow so that you actually know what you really want and need to realize your goals.
For what it's worth, I have the AJH MiniMod Ladder Filter and a bunch of other AJH modules. If you want the Moog sound and experience, I can't think of anything outside of Moog themselves that would even get close to AJH in the eurorack format. They're truly stunning and a joy to play. I will keep my AJH stuff until I'm deep in the cold, cold ground.
Have fun and good luck!