I'm not the best person to ask. But to be honest, those CAD Lights setups cost about what you'd spend if you put a brand new setup together yourself.
You can order a comparable size rimless tank from Glass Cages ($200-$300),
You'll get an overflow kit from Glass Holes (probably $50, possibly more) and drill the tank yourself, buy a stand ($149-$299) is pretty standard for a stand unless you DIY, a sump from eShopps or some place similar ($200), plumbing, skimmer of choice ($150).
Of course, there is a good resource here in BAR. In all likelihood you can probably piece together a system by shopping on classifieds. Maybe the tank you'll buy new, but you can save yourself a few hundred by shopping used for the rest of the stuff.