Sooo, just to be clear: it's on a side account that you don't want TNT to identify as a side right now, but want to use again as a side later on?
Honestly though, if you've read the guides and plan on following these, you should be good to go. Just don't do anything stupid. If you really want to be safe, stay off the PC for a few months. After that, even if people do report you, you ~should~ be fine.