Very nice! I've built a couple guitars out of Koa, hopefully your wood was mucho cheaper!
Which parts of the cabinet were ply?
For different wood types, have you considered using Bamboo ply? the edges are nice enough that you don't have to band them and they look interesting. You can use either horizontal or vertical on the exposed ply. Cost, at least here, is around $6.50/bd foot, so a little more than QA white oak. If you're in Hawaii, maybe it's more reasonable?
Thanks, the Koa ply was the main carcass, the back, and top. The solid Koa was the faces and the frame around the top. The ply was $380 and the solid Koa was $160.
I've never seen the bamboo ply here. We may have it but I've never seen it maybe because I haven't looked for it?