First T6, exciting times ahead!!
The tailgate panel is only a thin hardboard and doesn't take much weight, so you would be better off replacing the panel with a ply panel instead, or at least adding some ply behind the hardboard in the areas in which you'll be fixing the brackets to secure the table. Once the table is mounted, you may find the tailgate doesn't stay open, or at least fully open. If that's the case you may want to upgrade the gas struts to some stronger ones to help with the extra weight of the table.
These are all things we can do for you at the cave, along with a whole host of other mods, although we don't have an on line shop. Just send us a direct message if you have any specific requirements, or in the meantime, have a look through
this thread for some examples of our work.
We do all sorts to help you get your van exactly how you want it: Suspension, wheels, exterior styling, sound deadening, insulation, carpet lining, 12v and 240v electrics, audio, retrofits and more. We use the best products from the best manufacturers and all work is carried out to extremely high standards.
All the best on your transporter journey, Chris.