Gnome Terminal How to remember Window's position and size

It's annoying that everytime I resize the gnome terminal window. It never remember!
After googling, I found this really helpful information. and I try it..

I press [ALT] + [F2] to launch 'Run Application', then type:
gnome-terminal --geometry=123x38+0-0

It seems fit to my desktop with resolution of 1280x800.
For later use, I create a Custom Application Launcher (shortcut) on the panel, like this: