NO, You can't install iRite and HTML editor at the same time. But you should be able to make edits to iRite instances using HTML editor.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.