yes, i already thought so (about changing measurements) that is why i tried to make clear what i meant, it would be a pitty to do have to do a lot of work only to have to change it.
in old houses very often the paneling is rather high (even up to 1 1/2 metres (5 ft), but i have to check. the rooms in those old houses are higher - guess 11 or 12 ft. have to check that too. the hight you mention is that of modern houses.

"The light at the end of the tunnel may be an oncoming train"