From my experience, CIC does not require the bank history or bank certificate but there is a portion in the application package where you declare how much money you have, similar to the one I gave in the PNP application. They MAY OR MAY NOT ask for it in the later stages of the application.
For the first issue, I have some questions: Are the family members you mentioned your immediate family (spouse and kids, parents, siblings?)? Because if they plan to follow you later on, the only difference in the fees to be paid is the RPRF or the landing fee because they will not be accompanying you yet. However, the processing for qualification to go Canada, even the medical exams, will include family members that you declare, whether they are accompanying you or not. This is only an opinion because I myself have not read or experienced similar to your situation.
I hope my reply sheds some light. Thanks a lot! Good luck and God bless!
Good luck! God bless you!