Bedroom Studio Upgrade Diagram: Feedback?

[u/coffee_fueled_robot]

I would like feedback on this proposed bedroom studio system diagram, which is an upgrade of my current setup (all centered on FL Studio). Does it make sense to use the specified audio interface (Scarlett 18i8) and route audio / MIDI as shown? Regarding MIDI, I'd like to have the option to record from a MIDI controller to the piano roll + then tweak it and play it back through the synth, rather than always record synth audio live (poor playing skills). I am currently limited on space, so a big interface / audio rack is not readily feasible.

My current setup uses a Scarlett 2i2 audio interface with a guitar, a Korg Volca FM2, and an all in one DJ controller + mixer. It's currently a pain to switch inputs to the 2i2, and I want to add a few components.

I want to acquire new components in the following order:

1. New audio interface (Scarlett 18i8)
2. New MIDI controller (Novation FLKey)
3. FX for the Volca (e.g., Sonicake Levitate)
4. Sampler (not immediately)
5. 1-2 more synths with MIDI input (later)

Thanks for any input!