Hi,
This question is too vague - it really depends on how you as a family wish to live. Do you want to live in the cheapest area of all? maybe one in the middle of the range? or do you want a top range place? from that check the pricing and see if it fits with your income and how much you wish to spend for what you'd like in terms of other elements you wish to have in your lives.
Same with the costs - you need to research pricing for whichever type of property you end up with or have a shortlist for - there's no set amount you should be paying, as everyone/family is different.
As for utilities, I guess the ones we ALL have to pay are Council Tax and electricity and Water. Any others are dependant if your property has them ( Gas, Oil fired heating, Septic tanks etc) or if you want them i.e telephone, TV, internet service, mobile phone, satellite telly etc. I guess other elements that you 'need' are insurances.
theres lots of threads on this board as well as others to find out everything you ask in terms to research for your own circumstances.
Good luck!
Dennis! West London & Slough UK!