You can make it work if you use ferns, mosses, anubias, etc to get your plants up in the mid and upper levels of the tank instead of putting everything in the substrate. Attach them to the decor - get a tall piece of wood or store bought decor and attach a large fern to it. I started with a small fern on a fake tree stump and I just trimmed that sucker cause it was nearly as big as my head. Find decor to reach all levels of the tank, add plants to them at all levels, and you will have a very interesting tank regardless of the height.
I have been looking for a reasonably priced, more traditional hex tank in a cherry finish to go with mine but haven't found one yet other than some woman on Craigslist that wants a fortune for one. But I'd be very happy with a tank like the one you're being offered.