You can even do it without an instructor - you just need a pilot with you that is keeping a look out for you while in VMC.
It is going to be hard to find a G1000 equipped C172. I would recommend, if you have to get some training anyway, to use the "6 approaches, en-route, and hold procedures" to get some training in a steam gauge C172 [perhaps, for familiarity, with a GNS430/530], something you could actually use later to fly IFR on your own [assuming you get a European licence or a validation]
Last edited by Cobalt; 19th Jun 2013 at 18:46.