Customising with iRite

Hi, I've just set up PowerCMS on one of my sites and want to get my own styles working with it as I'm migrating my client from Contribute and so he is used to that environment. In Contribute I disable all the font choices and make them use my styles (it's for their own good!).

I've read through previous threads and had a look at iRite and want to know if I am right in understanding that I can use iRite to add my user styles to the drop down list to display with the heading tag styles? I've added my style sheet to the WA_iRite contents_insert_ContentValue1.js and contents_update_ContentValue1.js but found that it hasn't added many of my styles. I looked at the thread about this previously where you advise to create an FCK xml file but iRite looks like an easy way to achieve that AND would be worth buying if it also answers my second query :: I also want to change all the icons that are currently displayed by default in the PowerCMS editor. For instance, I would prefer to remove the font colour choices so that they only use the styles available (as per above) and what is inhererited from the page (which works ok). I've viewed the demo and it says you can customise that for your forms - can I presume you can do it for the PowerCMS also? Will it be easy to do, ie use iRite with PowerCMS?

Thanks