Question: Is there a command or better yet a setting in the config file to allow me to open konsole (the KDE terminal emulator) in fullscreen mode?

Answer: 
You can open Konsole in fullscreen mode with `konsole --fullscreen` (That should work only with KDE 4.11 and newer).

However, I assume that you want to be able to open Konsole in fullscreen mode with just clicking icon somewhere, maybe in taskbar. To achieve that, do the following steps:

1. Copy `/usr/share/applications/konsole.desktop` to either

	* `/usr/share/applications/konsole-custom.desktop` (in case you have root rights)or

	* `~/.local/share/applications/konsole-custom.desktop` (in case you don't have root rights. Also, remember to check that this directory is in your `$PATH`, and if it's not, add it there).
2. Replace the line `Exec=konsole` with `Exec=konsole --fullscreen` in the file you just copied.
3. To place that just created Konsole "launcher" to KDE's taskbar, just drag the `.desktop` file you just created from the Dolphin window to taskbar.

Then click the launcer, and Konsole should open in fullscreen mode.
The KDE Konsole Full Screen Mode is not the same as the traditional "full screen" text mode, it is just a maximized application in KDE.

You can set a good large font, hide the menu bar and the tab bar, and you can set the profile to save the window size-and-location.