here is the setup that works for me.
my constraints were:
-the goggles sit on my glasses and push on my nose no matter what: therefore the mask can NOT sit on the goggles ( it hurts) , it needs to sit on my face.
-I want to be able to remove the mask and go without it, so no hybrid option is considered yet.Plus the mask+lens option doesn't cover safely/enough the face.
1. I removed the two median straps to get less overall pressure.the mask still sits satisfyingly.
2. I cuttered and positionned the padding so that it fits around the goggles on 2 layers instead of one: this makes it sit on my face, and also prevents it from sliding upwards.
keep in mind that I wear a shemag around my forehead to block the sweat: the mask also sits on it.
Now that it's playable, I am thinking about painting it.
Also drilling holes in it to breathe, maybe.