I have the oppurtunity to purchase a used reef ready 210 gallon tank. It is glass with no large scratches and is built with the overflow on one side (island style), drilled with four 1.5 bulkheads. Not quite ready for a tank this large, but I do not want to pass up an oppurtunity for a great deal. I have not really tracked prices on tanks this big. Is this a great deal?