So all but done at my end. Massive thanks to @mholgatem, he's been a huge help getting all the bits and bobs working. Took inspiration from another DK build i saw online but went for a variation so that fighting games were available to me. Been a fun project.
:) Thanks. I live in South Australia and we have a very good wine industry thus Barrels can be picked up at hardware stores or surplus yards, pretty much anywhere (some in better condition than others). Its all pretty much reversible too so can just turn it upside down and remove the controller and its back to normal bar a couple of tiny holes.
Thanks @SSilver2k2, I like it. Wanted something to put on the decking and not really seem like a games machine if the controller was pointed away from you... but on closer inspection. :)