whats your passion, do you like the look and work of a reef, or nice Fowlr. i would pick one and run balls out with it. each has its challanges but doing both would probally be a PIA. if it was me i would get a nice size reef, like the DSA 105 or dsa 190, both great tanks. plenty of room on the 190 to do big fish and still have a nice reef.