Thracian Helmet and Boetian shield

[Fhyn]

Hi folks, I am looking at doing a Greek kit for SCA, and have always loved the look of the Thracian helmet in the pic below, but also love the boetian shields also.

Would it be just way out of context for them both. I know the helmet in the pic is dated 450 - 400 BC, and I thought I had read that the boetian shield might of still been used during the Persian Wars.

Thanks