Ok, i got the real costs now. Everything is just a little bit cheaper than expected, but that's only positive off corse.
All in all the total costs for the 3 tickets will be:
€ 245,00 , Within a few days i'll get the tickets by post and they will be taken to LeMans by my father in law or my brother.
There is also the possibility of selling the cards seperatly. So the 2 GE tickets come together and the camper/camping ticket comes solo, if you wish.