I had played your missions, except this one was a bit hard because of cops, haha. (Still didn't beat this mission yet, though)
Now, I am not really a good "reviewer" or a critic, but I'll just say a few things here:
In "The Introduction", it was okay. Except in the beginning, the map turned into void (I am talking about the cutscenes, not the mission itself, however, the start in the bed was normal), however, seeing as you are already done with the mission, I don't think you sh

I don't think you should change anything. Now, here are a few suggestions: 1. Instead of putting checkpoints in vehicles, you could make it an objective instead. 2. Instead of uploading missions one by one, you can put them in a zip file instead.

If you want it to have different chapter for each of them, simply put a file for example, let's say "Chapter 1", then put your dyom saves in it with the missions. This probably wouldn't force you to upload missions one by one anymore.

I am still hoping to play more of these parts.

And also, instead of adding checkpoint arrow routes, you could instead use Add Objectives > Add Special Env. Objective > Timeout > How long you set a cutscene to be (This is gonna be in text only), then add some text. This way you don't need to use these checkpoints used for races.