Haha, Binky's not letting you off easy! Looks like a good draw though, should make for some interesting fights!
30mm polycarb should be well enough too, I'd just make sure you can self-right quickly and keep away from the sides! With that much armour, you'll probably still be susceptible to damage from the spinners by way of the HDPE getting chewed up, but they'll really only be able to chuck you out the arena. That's my main worry with HardWired. Axes though... They're a different story - hatchet particularly looks vicious!