I'll leave this for Jesse and Ben to answer, i'm not really qualified.
I'm just saying that your "mix" in the higher ranges is neither powerful or loud or chesty. It's a solid head voice, but probably not a mix.
It doesn't sound like you are putting alot of pressure in your sound. I've been learning to add pressure (the bottom) into the second bridge lately,
and I'm telling you...it sure feels more like chest than head voice...