don't see why you can wet sand or any kind of sand the epoxy, but as they say try on a small section or do a test coat piece before the main one.
As always follow the manufactures directions on the top coat or waxes. as the items in it or the top coat can and do react badly with each other. Causing a mess. nothing worse to clean up than a half a** dried or concegealed mess of epoxy.
Been there, probably broke it, doing that!
I am not a lawyer, and never played one on TV!
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