@Vincent.Beaudet, as vmaslov points out, no you can't mix PS Eye cameras with Kinect.
The devices you want for head and hands tracking are PS Move or Nintendo JoyCon. Wii controllers will also work but I don't think they are as accurate.
For hands you need two controllers and for the head you need one. I
think you can connect up to 8 devices per bluetooth chip/card in addition to the cameras/sensors connected by USB. (FYI, I've never tried more than 3 bluetooth motion devices.)
The secret to getting good rotational data is to lock the devices in place.
For the head, you want to mount it to a hat or head band that will not move relative to the head. I used a bicycle
helmet. A construction
helmet works too but you'll want one with a strap. You can see how they can be mounted at my website.
https://littlegreendog.com/?s=mocap+helmet(Nowadays I use a different bike
helmet which I like a lot. It's not shown on my website but I can post a pic later.)
For hands, some users like to attach the controllers to the back of gloves. Some even break down the controllers to the bare unit and attach that. I just hold the devices in my hands, gripping it firmly so the rotation is 'locked' to the rotation of my wrist. This takes a little practice to get natural movements but I got used to it quickly. One advantage to holding a PS Move controller is that you can use it to operate iPi Recorder remotely.
Hope this helps.