I'd try to rack it where it is without disturbing the pellicle too much (to avoid getting that mold into the beer if possible) onto some sugar syrup to give the brett a leg up on reforming another pellicle. Actually, I'd give them a sample and if the taste was right blend them now. Hope that helps.
I'd taste each individually, then blend in equal parts (thirds) and see what I thought of the blend. Need more sourness, add more of the three year old, or whatever. The leftover I would blend together and add to fruit (probably raspberries, yum).