John,you got me there.Don't believe I've actually read the entire Alpina Magic manual.Free flight..I can understand your thinking.
Enzo, My recollection is Obeechi really soaks up epoxy and so filling and sanding the grain is mandatory to avoid excess weight. G/SQ M is a measurement I cannot interpret. 130g sounds close to 5oz. or slightly more than 1/4 pound.If it's Really pretty than I guess it's OK
Ken, as already mentioned,Obeechi is known to be porous and soak up the epoxy.
It would be great to see you do a thread on the Arriba.