Hello Kev
I am not an expert, but have had the same problem when I have made biscuit mixture for shortbread, or
a large batch of pastry.
All I have done is wrap it tightly in cling film, and refrigerate it (will stop it rising as it needs heat to rise)
until I am ready to bake the rest.
I would snap up the machine - surely you could just do 10 kilo per go and not fill it to the top?
I do mine by hand ( or in the Panasonic Bread Maker, then remove to bake sometimes, was thinking of purchasing a Kenwood, but did not know which to go for, the compact one that cuts and shreds too, or the big mixer with the stainless steel bowl.
Any other suggestions for dough makers would be appreciated.
Julie