These are great masks. I have several.
You can clear them (the mask) in any position. They actually clear themselves for you.
The most common mistake that students make while trying to clear a mask is to exhale too hard through their nose. That then sends the air in a jet stream under their mask and out into the pool or ocean without clearing the water from the mask.
Try exhaling more slowly. Very slowly. Very very slowly. Relax when you do it.
Chlorine in your eyes happens because there is a lot of chlorine in the pool. No way around that. Has nothing to do with the mask.
After you have learned mask clearing, the next skill is mask equalization. Same principle: slowly exhailing through your nose as you descend. The purge relieves the difficulty of exhaling into your mask, and therefore encourages you to exhale through your nose on every breath.
So inhale through your mouthpiece, exhale through your nose. Tricky, but you can learn it and it becomes natural eventually, like walking and chewing gum.
Equalizing you ears has little or nothing to do with your mask. Equalizing your ears is normally a several step process. First equalize the day before the dive. If you cannot, you have an asymptomatic viral infection, and you cant go diving. If you can, then equalize on the way to the dive site. Then equalize on the surface before you start your descent. Then equalize on your way down about every 10 or so feet.
You can pinch your nose to equalize, or swallow to equalize, or tense your neck muscles to equalize, or you can press your mask against your face with your hand and exhale through your nose to equalize. I have never had any problem with the plastic purge value on the nose getting in the way. But then I also do not grab my nose like a baseball when I am trying to equalize.