This is just the way I like to relate to myself but I'd decide I was allowed to switch to poly if it was a good idea but that I'm not allowed to date poly-inspiration-X. For at least as long as a limerance period could be expected to interfere with judgement and also long enough that I could see if poly worked for me without the interference. That way my infatuation biases don't get to subvert my decision making either by temptation or by defensive reaction.

That's completely reasonable, I'll agree with that.