Welcome to the sport and the forum! Yes, you posted in the right place!
The length of the string would depend on the size of the top, of course. If the wood top is about the same size of the Imperial you need a somewhat longer string. On my BC tops I use a 69 in (175 cm) standard gauge string.
The main difference in throwing them is that with a wood (solid) top you have to pull back harder than with a plastic (hollow) top. The reason is that a solid top will have a higher ratio of forward momentum to rotational inertial.
Having said that, be aware that a few weird wooden tops can be tricky to boomerang!