@moderator: Reiterating my request, please, move this thread to the Submission subforum. Thanks in advance.
Yes, that should be a good idea.
Dragon is almost stealth, leaves behind the (empty) registry keys
Also the flash plugin writes to the registry
but you can avoid that by copying Chrome's custom flash plugin to Dragon's directory and not using the normal one (that goes for all Chromium-based browsers. You can also copy Chrome's pdf plugin too)
Download the installer, run it, choose portable mode and untick flash player's installation
*Last time i tried this i couldn't make the extensions work right, now i can not apply a 3rd party theme