For mine, I have used powerpoint as a presentation tool - minimal, but effective. I also took several copis pf the presentation as a handout to give to them afterwards - my old manager still has my interview handout on my file
so it must have been okay. They are usually short - have they given you a time frame? Make sure you stick to the time - no less and no more - and practice well to keep to time.
I would say you are on the right track for content - think of the differences they would be looking for between and Band 5 and a Band 6 in the way you would make a difference.
Personally I love presentations, because for that short space of time in the interview, you are confident in what you are saying and what you want to put across to them!