I have to agree with what has already been posted. Get the tank, top & stand from your LFS.
For large tanks I lean toward oceanics, but I have only had one problem with allglass in all the years I've had aquariums.
Take a good long look at everything you can about the types of fish you want to keep because some types of equipment are better for certain types of fish, IMO.
Research everything you can online and even look into shopping at ebay for equipment. I have used Bigalsonline and find it to be, as a whole, cheaper than thatfishplace.com and
http://drsfostersmith.com/
Think about the maintenance involved and how you actualy do things. I love canister filters but some find it easier to use HOB because they don't have to worry about hose connections and getting under the tank from time to time.
My father taught me to buy the best I could possibly afford of anything I was planning on having for ore than a couple of years. I tend to get the best heaters and filters I can afford even if I have to wait and save a little and they don't usually come in kits.
I know it is hard, but take your time and plan it out. It will better and cheaper in the long run if you do as much planning up front as you can rather than trying to replace and upgrade later!