pet store problem

First off i am buying a Tank sized from 210 to 240 72 x 24 x 25 to 30 depending on brand all-glass ,oceanic, perfecto or Glasscages.com that is my first question what are the pros and cons of these tanks. Second it will be a fish and reef tank so i went to one store they told me to do overflows with the sump tank . the other one told me to use a Fluval FX5 External Filter . third thing is I am going to build the tank in to a wall and want to make it double sided so if i go with the overflows i can't use the all glass because they don't make the corner overflows anymore. perfecto has no website so i don't know what size tanks they make and if i go with the oceanic it will probley be a arm and 2 leg because it will be custom because they will put overflows on the sides. But Glasscages.com will put them on the side and the price will be about $895 The pet stores around here in connecticut want over $900 to $ 1000 for the tank with no overflows.Please help me with where I can get this size tank for a good deal will travel 3 or 4 hours and should i use overflows or canesters I just need the tank no stand or canopy

a oceanic is a 215 gallon the problem is i need the overflows on the side glass

buy the way what kind of car you have TipStylez