TO QUALIFY UNDER THE SELF SUFFICIENCY RULE

how much does a family of 3 need to have in their savings account to qualify to apply under the self sufficiency rule?
my family and ilive in germany at the moment and we are planning to move to the london, first week of january under the self sufficiency rule,i am a german(EEA),my daughter is alson EEA and my wife is nigerian.we have about 35,000.00 euro savings.is that enough for the self sufficiency rule?any idea which private medical insurance is acceptable to home office caseworkers?and finally can we use our bank balance sheet papers from our german bank accounts as evidence or should we bring the money over to london,open an account there and use the bank papers from a london bank as evidence? only problem there is that we can't meet the requirements for opening an account in london, ie that we should provide utility bills for a month or three.please advice me if you can