Nikaah & Marriage Issues

Prospective couple meeting and not delaying the marriage

Q:

1.When can a proposal be rejected in Islam?

2.Is it correct to ask for a prospective spouse who has a sunnah beard and sunnah dressing? I don't like a modern lifestyle because it's not what I am accustomed to nor brought up with.

3. How many times can a prospective couple meet under supervision if they need to discuss aspects of nikaah?

4. After the proposal a bride accepts, within how many days does one have to make nikaah... since it is emphasized in Hadith to hasten for nikkah to take place.

Informing a prospective spouse regarding an operation one underwent in which my one testicle was completely removed

Q: I underwent through orchiectomy, in which my one testicle is completely removed. My doctor said, one remaining testicle is usually enough for reproduction and sexual health. Alhamdulilah with the blessing of Allah, no further treatment is required as testicle tumor was in its very initial stage. I will only be under periodic surveillance in which scans and blood test will be conducted.

Now, I am planning to get married, so my question is, is it necessary to inform the girls family about this operation which I underwent. I dont want to tell them about this as it is quite embarrassing and will lead to confusion at their end. Please pray for my health and for my nikaah.