call your local cabinet shop and find out thier supplier for odd wood types......be very nice to them at the cabinet shop.....
we got rough cut spanish cedar boards like 10 ft long then took them to the cabinet shop and had them planed down.... then built the humi
however when you see the price of the spanish cedar you will go to the auction site and bid on the tower of power.....lol
also that e- auction has like 3' boards
good luck