Honestly, you shoukld do the tnk 96x 36H and 48 D, this dimesion will make the tank look much better.

Height is not a good quality truthfully , depth front to back is and makes the tank look bigger.

The view have much more potential.

A lot of folks wnat to the taller tanks to save on space or so they can have a better view of their fish, this is not so obvious, but you see them better with depth in the tank, the environment looks more natural also.

You can do a lot more aquascaping wise also.

And of course the more obvious issues, 36" is about the limits you really want to work on in a tank that you need to prune.

When you drain it 1/2 way, you have about 18" of water and can easily lean in and trim etc, lighting is also easier. If you have 48 to work with, you must dive in and hang, not easy, 24" deep water is also hard to prune in.

It;s a big deal and I cannot tell you enough that you shoyuld really never get much over 36 if you plan on having a nice planted garden in there as a general rule.

You can, but the work load is more and the over all impression and look will be better with the other dimension.

Regards,
Tom Barr