Unless you intend to use it a lot hiring may be a much cheaper option than ownership. As far as I can see the outlay is huge and the actual cost of ownership (insurance, tax, service, repairs, fixes) would seem to be quite high particularly if you take re-sale value into consideration.
Best option for buying would be to wait until late Autumn 2015 and buy a 2014 or 2015 build that someone has decided to move on.