Bowmasters + Horntail?

I dunno about that. The HP would offset the lack of Defence. Pirate hats are fairly high defence to begin with.

nope. each m.def for archers seems to reduce magic by 2~4 damage. there's a 60? point difference in m.def, so 120~240 extra damage taken. subtract the 90 hp, and that's 30~150hp you're screwing yourself over. that, the zhelm's extra 10 stats and 3 extra slots kinda wins out... and you can scroll multiple zhelms...