(1) For a 2 footer, it will limit the fish choices you can keep to those that grow no bigger than about 4 inches. (Below is a good site to check out.)
http://www.liveaquaria.com/product/aquarium-fish-supplies.cfm?c=15&pcatid=15
(2) Also, your aquarium space would be at a premium for a 2 footer. Hence, I suggested a hang-on type instead of an internal type.
(3) Without a chiller, our Singapore climate would be too warm to keep corals in the aquarium. If you do intent to have a chiller hooked up, be prepared for one more pump in your tank.
From the above 3 points together with lighting, you can probably visualize how your 2 footer would look like. You'll also be able to estimate how much more you need to spend for this setup.
As you browse thru' this forum, you probably notice many reefers include a sump in their setup. It provides space & flexibility to house the equipment needed to keep the LS they want without the clutter in the main display tank.
One more advantage that is seldom mentioned is that a sump, being low at about knee height makes it so much easier during water changes. A 10% water change for a 2 footer would approximate a full pail of water. It's no easy task hovering over the edge of your tank (say about 4-5 ft height) with that full pail of water. I know 'cause I've gotten soaked from face down from the splashes, not to mentioned the back ache after every water change.
Giving more thoughts about your periodic aquarium maintenance, & how easier, safer you plan to do it will definitely go a long way in making this hobby much more enjoyable.