How to orient ESO's Milky Way Panorama in a 3D model
Here is a star map (from http://www.datasync.com/~rsf1/fun/sm-newd.gif ) given in Galactic coordinates. It appears to be presented in a similar (but not the same, since it is rectangular) projection to the one you show above.

The Galactic centre is in the middle and the Large and Small Magellanic clouds are to the lower right and oriented in the same way.

As you can see from this map, your assumption is completely correct. Ursa Major and Polaris should be situated towards the upper left hand side of the picture. Conveniently it should be on the opposite side and roughly equi-distant from the Galactic plane as M31 (which is clearly visible in the image) and at a similar (slightly lower) Galactic longitude.

I have added a copy of your image at the bottom and marked where I think Polaris is. I suggest you get hold of the higher resolution image available from Serge Brunier if you want to pick out individual stars. The way you transfrom this into equatorial coordinates for different times of the year is not as simple as you suggest.