Inline Editing Question

Hi All,

I'm currently developing a CMS that allows users to edit page content using a rich text editing tools.
It emulates inline editing in Firefox by creating iframes and styling them so that they look like part of the page.
I then use the designMode property to enable editing.

Each page can have multiple editable areas that the user can type into to. At the top of the screen
is a standard formatting toolbar that allows the user to apply Bold, Italic etc. If the user clicks any of
the buttons the formatting gets applied to the focused inline editable area.

I started developing table tools to allow the user to create tables and merge/split cells etc, but It's
getting very complicated so I'm considering switching to FCKEditor instead of my own code.

How easy would it be to integrate FCKEditor into my CMS so that I can have a central toolbar and multiple editable areas (iframes designMode=true)?