Preedy,
I would used Wayne's design, but Email Wanye and ask what crossover changes would need to happen to use the sheilded woofers. Wanye is a real nice guy that is quick to respond to Email's. He might even already know what needs to change.

These speakers sound awsome, i wouldn't start mix matching diffrent designs, especially if its your first attempt.

I'd start by asking Wayne what need to be done to make the DIII's shielded.

I have built the DIII's and they are pretty good . They have a wonderful range and very clear mids and highs. However, for about the same amount of money you can build the Lyras. I think the Lyras are even better with a great sealed box bass sound and very clear mids and highs. Take a look at the Lyra design it is a true 3 way. I really like them better after building both speakers.

if cost was no object, would you build the the Eros?