Hi Terri,
I had thought of various way to get around these translucent decals.
Applying the wood decals, then white paint or white decal over the wood decals where the kit decals are to go, then applying the kit decals.
Applying the wood decals then using masks to airbrush on the various kit markings.
Applying the wood effect by oil brushing then airbrushing the kit markings.
Although all of the above are feasible, they all involve either two or more layers, which might leave a 'ridge' around the finished markings.
That would be tricky to eliminate without damaging the markings and surrounding area.
Applying the wood and kit decals separately onto a white base coat is not going to be easy and will be time consuming, but hopefully there won't be any noticeable ridges and it'll all look uniform.
We'll see
Mike