Since most of the conversion is internal all you need to do is remove the armament, Harrier specific deck equipment and the associated electronics and give her her a red and white paint job and you're done.
Not all the conversion is internal. As you said, armament and some electronics and radars would have to go. But I'm unsure what specific radars (Air search?, Surface search? ECM?, etc.) and electronics would have to go? This is part of the reason why I was asking if someone could do a modified drawing for me to show what is kept vs. what is not needed.
Secondly, read Post # 21 here:
http://www.whatifmodelers.com/index.php ... 00.15.html
I'd like to add more personnel/utility boats alongside the ship's hull, but am unsure where to put them. So I need some suggestions (and/or drawings) and ideas.