Various masaail of Jumuah

Q: I stay in Cape Town and most of the musjids are of the Shafi'ee Mazhab. For the Jumuah Salaah, they only perform two rakaats sunnah before the second Azaan and khutbah commences. Since I am of the Hanafi mazhab, I am required to perform four rakaats. Therefore I am not given enough time to complete it and generally I am in the third or fourth rakaat of my Sunnah Salaah when the Azaan or khutbah starts. Kindly advise me of the correct procedures to be followed if what I am currently doing is not acceptable.

Q: I was travelling in a foreign country and had to perform Jummuah Salaah at a Jamaat Khana on the premises of an "Islamic bank". Is my Salaah valid?

Q: Due to space restriction in an existing Masjid, is it permissible for Muslims to perform Jum'ah Salah in a church on the basis that some brothers argue that the whole earth is a Masjid and provided that any items pertaining to shirk are covered, there is no problem in performing Salah in a church? If it is not permissible please advise why with Shar'i evidences so that the matter can be addressed with the proofs in front of us?

Q: How many sunnah should be performed after Jumuah salaah? I read in a Hadith that 2 rakaats should be performed, but we normally read 6 rakaats.

Q: Are we allowed to pray Jumu'ah in a church hall, private hall, community hall, etc.?