The value of taking your time comes towards the end of doing so. What you describe reminds me a lot more of my BPD streak than my BP symptoms, so I'm relating more from a borderline angle. That said, giving it a couple weeks will allow you to see if your feelings change, only minus all the drama, roller coasters and emotional angst that would happen if you were to keep pushing forward instead of just waiting a bit. Idealization and desperation tend to require a lot of contact initially, it's like a "feeding" in a way, and you can't feed if you're not at the table. But if 2 weeks goes by and you've had time to sit on the feelings and thoughts, and you feel calm at the end, then that is a much better sign if you choose to pursue her.