Hi,
1. if you use the bank payment you will have to instruct the users how they can deposit the money. Usually you provide the bank details but if you don't want the information to be visible in public you can ask them to email you first.
2. I did not understand exactly what you need here. If the seller and the buyer are not in direct contact how will they be able to sell/buy?
3. You can create different categories or use the advanced search and select the city you want to search for ads. You can check the advanced search in the
demo.
4. There is no release date announcement at the moment. You can check the status of the release
here.