Hope you'll provide a pictorial of your speaker build. And, you're going to love hearing what your sweat equity brought forth.
There's some pics here under the heading of 2Pi Towers down the page a little showing what we used on my friends pair of speaker. We used Ash wood. I looked up Khaya wood and that's beautiful looking. It would be stunning. Bet it's costly. But hey, you're going to live with it for a long time. And you only live once. So let the good times roll.