I can't do glass. Sorry.
I personally think you should go with acrylic with such a large tank. A lot lighter, durable, will never leak - repairable, and best of all, it insulates the tank better and keeps the temps more stable.
You really should go with acrylic. For 30" tall and that much water volume, I recommend at least 1" to 1 1/2" thick acrylic.