I am in the process of setting up a 120g tank with 150 #s of live rock and a 40g sump. After the tank has matured for about a year, would it be of sufficient size to keep a pair of mandarins? I obviously will not get them until I have a huge supply of pods but I am wondering if this is enough to support a pair of them. I have never had one before and plan on at least getting one eventually.