Nice to see you
I read that thinking .. Okay shes a rude bitter unhappy person... I think many people have met her and run the other way as fast as possible, and rightfully so.
As for dating with Bipolar.. I don't think it needs to even be talked about until you have had to time to get to know someone and you them. Most everyone is on there best behavior in the early days , well besides that creature.
There's no set amount of dates to where you need to disclose. Personally I think before bedroom activities were to happen is a good guideline but that's just my train of thought.