Basement 280 Gallon Build:

[sphelps]

Yeah for sure front access would be sufficient, pretty much like most tanks are situated. You would still have decent access to part of the back as well though, 58" out of 90" is basically two thirds so most of the tank can be access from behind as well.

Just a quick thought for the shower, if you extend the bathroom wall 6" down the page, and center a 36"x36" shower pan on the drain and put a 12"x36" bench on bottom of page side you'll gain a little more clearance (6") for the tank would negatively effecting anything else.