Tradeshow banners - Polystyvert

Hello I need to provide an artwork for printing the wall of our booth at a trade show.
Attached is the display required and here are the specs
à300dpi minimum and as per dimensions below:
2 x side 3m walls: W2,971mm x H2,510mm
3m back wall: W2,920mm x H2,510mm
Please note that on the proof the 1st and 2nd pannel of the back wall should be inverted.

Thanks