Mine was v cheap as i did it through the RAF but 5-6 grand would be about right . To make it cheaper try and do it all in one fell swoop take three weeks off if you can and do the whole lot . And secondly I mentioned this on another forum get yourself a smaller aircraft pa38 cessna 152 or 150 its considerably cheaper than than a larger 172 after 3 hours flying youll be reducing costs . with mostb flying schools at the mo 100-110 quid per hour is about right yu shouldnt be paying for an aircraft that has two empty seats and a baggage area , your learning to fly think about pax later on , just my two penny worth