.Yes, I agree with loading on the flight deck, but surely it can still be done with the wings folded. I don't have your experience of course, but when I was building my Skyraider I found several wartime photos showing aircraft fully loaded and with wings folded.
Pete
PeteHaving said that, I can't swear that any of the photos I have are wartime, and I'm wondering how they's attache the outer rockets with the wings folded, so I'm probably wrong. I've also just realised that Tim's aircraft is FAA and the photos I have are US aircraft, so maybe different rules apply