Need help to create After Effects template from existing video

Hi After Effects specialists,

I've got a 6 x 30sec videos which need to have objects inside them rotoscoped, tracked and replaced with other images and video. I've linked two videos below:

First video: Video 1 of 6 total videos. Tracking points were included during the shoot in case it makes it easier for motion tracking.
https://www.dropbox.com/s/6y556duez23hcc7/Phable%202%20-%20LL.mp4?dl=0

Second video: The second one is our product video which will give you a full understanding of how it works.
https://www.youtube.com/watch?v=jMMASc9e9B4

The templates will allow us to replace the mask in the After Effects project with any image or video. So essentially it's a track and replace.

I look forward to your proposals. More projects will follow after this one so I hope to look someone we can work with long term.

Kindest regards,
Ben