At first look the helmet does seem a strange choice when they have a better Morion available. However the Conquistadors were more of a voluntary militia than an organised army, and they had to supply their own materials, weapons and horses. This suggests a lack of uniformity is quite acceptable, especially in the early settlers and explorers, so his armor and weapons are probably quite suitable.
I'm wondering how common red hair is in Spanish and Portuguese nations.
I like his striped arms and legs, and the use of a "big belly" swordbelt to go over his armor, they may have picked up that idea from various customisers on the internet.
I'll be getting several of these to add to my Spanish units, and hoping for some Incan and Aztec warriors, or better a full theme.