I have an old 180G oceanic planted.
Unless you're a tall person with longer-than-average arms, start envisioning an aquascape that won't require you to reach to the bottom middle of the tank.
That's not meant to be a negative comment. I love mine and it truly is a well-built tank. And I bought it used and was formerly SW as well. But the center-brace presents challenges. Being a SW settup, I can pretty much bet you won't get that brace totally clear, so there will be loss of light penetration as well. Again, just something else that you should plan your aquascaping / plant choicesaround.
"Why can't my wife see all of this stuff as an investment?"