Thanks for the offer JA, it's going to be tight with either camera. I have an f/6.3 focal reducer which will be essential with the 224 and 9.25", while my 6" at f/6.3 will fit easily but will result in an even lower resolution.
Given the poor weather forecast for Monday, it looks like Sunday will be the best anyway, so I'll have to go with 6" (or a larger sensor). I'm also looking at my Canon 700D as another option.
I do appreciate the offer, but I'm hoping someone might have a larger option available (and who is willing to trust it to some random off the internet
). It's a long shot, but if you don't ask ...
Thanks again,
Andrew