Well, the oscillator in the Eurorack world would output a constant signal so you’ll need a VCA, or a low-pass gate, to tame it a bit. To use the AK together with a modular synth, you’ll need to open the AK’s VCA hence you’ll need a VCA in the Eurorack.
I’m using my AK as the controller synth for both my Eurorack and other stuff. The only thing it really lacks are a sustain pedal controller pedal input.
Depending on what you’re planning to get for the Eurorack the routing you’ve written in your post looks fine to me.
Let us know how it goes for you.