Three.js Model Insertion and Example Customization

I'm looking to extend the "examples" provided by [login to view URL] with some of our human models: [login to view URL] -- I want to replace the "dominos" in this scene with a human model (loaded from either a CTM or OBJ, fully textured) [login to view URL] -- I want to replace the cubes in this scene with a human model (loaded from either a CTM or OBJ, fully textured) and want to be able to speed up and slow down the creation of new objects falling onto the pile [login to view URL] -- I want to replace the "wall" with a human model (loaded from either a CTM or OBJ, fully textured) [login to view URL] -- I want to replace the long segment/balloon with a human model (loaded from either a CTM or OBJ, fully textured) [login to view URL] -- I want to replace the rotating monkey heads with a human model [login to view URL] -- I want to replace the "[login to view URL]" logo with a static human model (loaded from either a CTM or OBJ, fully textured) [login to view URL] - I want to replace the ball that is bouncing in and out of the water with a human model (loaded from either a CTM or OBJ, fully textured) --- The OBJs/CTMs will be hosted on the server and will need to be loaded using [login to view URL] appropriately, scaled for each scene, and oriented properly. Models are already standing on [0,0,0] in space and are facing in the +Z direction, with +Y being "up". BONUS: I'd also like to have a button that takes a screenshot and triggers a JPG download of that screenshot rendered from the viewer, as well as a button that can be pressed and held to record a video of the render which would trigger an MP4 download of that video upon release (a loading/processing popup while it is prepared is totally fine too). This isn't part of the project bid that you initially submit, but I'll pay you for it after we've done proof-of-concept with all of these demos (and I assume it is something you can repurpose for all of the demos). SECOND BONUS: I'd also like to add a logo overlay (essentially a watermark) that shows up on the top right corner of the viewer in the screenshots/videos as well. I hope the above is descriptive enough - if it is not, please feel free to reach out to me via a private message. I'm hoping this is a relatively simple implementation for someone who has [login to view URL] experience and works with 3D models/WebGL regularly. The deliverable for this will be a lightweight Three.js-based HTML/CSS/Javascript package that we can run locally. The deliverable *must be your own work* and *must be usable commercially without purchasing any additional licenses* (e.g. please just use [login to view URL] in its bare form and do not use anyone else's functions unless you can link to their license and it is acceptable for commercial use). I look forward to working with you :)