Hey man, I have a 30cm+ BGK in my community tank and the only fish it seems to attack on a regular basis are my 2 plecs, doesn't do any serious damage just a few ripped fins and that. Saying that all fish can be different and yours might be fine with plecs, you won't know till you try it I guess. If I were you I would try it out with some cheap ones for a few months like BN and common sailfins and if it doesn't bother them you should be fine.
HTH.