I used just basic gorilla glue, regular wood glue does the job. You need to make sure that the surfaces are perfectly flat, don't scratch them with sandpaper. Smooth shining flat surfaces stick together very well, just put enough glue that there are no voids. Glue both surfaces that are going to be glued together.
Ipe is used for decking from what i have heard. In America and Canada you can buy it from any lumberyard i believe.
I don't have any bows that have such high draw weight for sale.
I think with ipe bamboo combo you don't need any reinforcement, it is so strong.
My second warbows were from ipe maple hickory and it is pretty much impossible to destroy the bow. Unless you take it to the 200lb range and make the handle too bendy, like i did.