yes, I want the new tank to have rock scape, even more than wood.If the tank is empty, just soak them in there. Assuming you don't want to set up your tank without the wood.
You can work on any rock scape ideas out if the tank, and say a cardboard box or something.
do you recommend using carbon to help clean out anything it might have?It is most likely safe to use after soaking to let anything leech out (so changing the water as it is soaking is very important). All wood rots eventually. Light soft woods just rot faster. A new 55g trash can is great for soaking wood and a variety of other fish related things, I keep a couple 55g barrels around just for my fishie projects.
Anything gathered from the wild has the potential to harm our tanks but the risk is low here...unless it was a heavily polluted beach.