Unless you are planning on fighting in your kit, I would go with the maille. You seem to be going for a "darker" look with your kit. This is super easy to attain with maille. Don't buy it black, just get it about the same colour as iron. Check out GDFB for that. I would reccomend early 14th century/late 13th
Buy GDFB gamboised ciusses (they come in black for the "look"
)
Get a surcoat made. Make it good 'n dark, like your COA.
Get a coif that matches the maille. and go for the greathelm, w/ a skullcap underneath the coif. and reccomended arming cap.
Get thyself a sizable shield, get it painted in your COA.
and seriously go for the greathelm. It's uber-intimidating and would match the "dark" look perfectly in the right colour.