Coming from someone who's done tank maintenance for a living. You dont want a tank over 28" tall. Its just too much of a pain to get to the bottom, especially in your case with it being a reef. Having it that deep also increases your lighting requirements to get good penetration that deep exponentially. I saw you were planning on making your stand 32" tall, personally I would go 36" as having that little bit of extra room really helps inside the stand.
Also for you lighting, are you planning the base model Illumina or the Illumnata (much more expensive reef focused lighting). If you're planning the illumina it wont be able to do sps that deep. They are a great light, dont get me wrong. You'll be very hard pressed to find a better LED out there for the money and they can grow the hell out of coral in a shallow tank. But they dont have the optics or the total # of LED's to be able to support sps that deep.