Critique my planned 3 way...

There's two ways to do this AFAIK. One is to place the input (the mic) on the same position, listening axis. Usually this is center of tweeter. This doesn't show driver cancellations or gain when they overlap. The second way is my preference, which is to center the mic on each driver for each sim. Moving the mic around can be useful for finding problem areas, but the file output is based specifically on the mic icon location.

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That looks really good! The question now is the same as it's always been. What do you want? You could add in a PEQ to clear that midbass bump. It also looks like the midbass is boosted somehow in the "filter" box. To keep your equipment from bottoming out, all those filters should probably stay at or under 0 gain. I'm wrong again. You're fine here, I'm blind. -10dB read 0 to me. In fact you could probably apply gain to everything and raise sensitivity slightly once tuning is over.

I've highlighted something you can try to fix, though preference may dictate the change unnecessary. Try inserting a PEQ filter into your crossover (green arrows), and targeting that midbass bump in the orange boxes. A filter like that should affect both, but otherwise negative gain may need to be applied like you've done today on the mid/tweeters.
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Looks good if the mid can handle that kind of range without breaking up or distorting. Comes down to listening experience.

PEQ is not specific to VCAD and you should look up how they work. It will be essential to finishing the project and implementing it in a room.
 
You can always add another driver without files to check some subwoofer basics. Just set the SPL to something reasonable in the mid-80s unless you know the spec of your sub. Might want to cross at 80hz, but it's tough without being in the room.
 
Yeah so you added the rhythmic sub exactly the way I was trying to suggest earlier, as a fourth separate driver. A “D4”. Nothing about a midrange.

The room really dominates in the low bass, so it’s very hard to say offhand how any component will perform. Sims may fall short.