Planning and setting up my tanks

We recently relocated from Schertz (San Antonio) to Stephenville.  While in Schertz I had a 210g set up as a peninsula mixed reef and a 50g that served as a quarantine(QT) and coral grow out tank for the 210g.  I did not feel comfortable about drilling and possibly cracking perfectly good glass on the 210g so I went with an overflow box.  The stand and canopy were built to accommodate this overflow and peninsula system.  I have the 50g cube up and running and serving as a QT for the 210g, which is still dry.  I am tossing around the idea of a 48x48x24 to replace the 210g.  Right now the 50g is going through its ugly portion of its cycle.