TINYMCE add more options?

For some reason TinyMCE only loads the default setup (which is very limited), when you install SuiteCRM.

I managed to changed the code and updated it as per pastebin here:

Any ideas how to enable a more full version of Tiny?
One thing I miss for example is the ability to add a image to a email which normally would be a pretty simple thing…

Is there some overview page with options list somewhere on how to configure TinyMCE?

Kind regards