its really up to you snd Skullfire to be fair. However, a lot of people have seen crossover fics done by two of T.H.E B.E.S.T aurthors on these boards (turns ***-kissing mode off) and well, people may not have as much interest in another c/o.
Put simply, Gavin and Andrew had an amazing sucess rate, basically because it was such an amazing idea; two fanfics crossing! However, i think the same enthusiasm may miss another c/o, so be careful.