Found that if I raised my machine to its highest point, then I could use the 60" cutting mat on my back table to cut all 43 pieces out.
The frame itself then came in very handy as a clothes horse.
I can now say that after three days of sewing I have the whole dress in one piece, the last seams are only basted in case I have to do some major changes. Now I can take it on a 1500km road trip to my daughter's this week for a fitting.
Then once I get back home put in a zip, finish the bodice edges, hem the lining, the dress and the overdress.
Then I can start on my outfit and also a top for the granddaughter with some of the leftovers.
Still doable - just a bit more difficult since my grandson will come back with me so my daughter can finish her wedding preparations without four year old tantrums.