Use of a lense shade also gives me concerns, though I am often told your body is the best shade - all I can say is I'm Not that big that I can shade a 6x24. Lee do an excellent wide angle lense shade & filter holder combination that works quite well on my Mamiya 43mm lense though that only has a 92degree view. But least the Lee is a bellow type can adjust it and if necessary cut one appropriately.
Operating this type of camera I know is going to be a bit of a challenge, especially as I do most of my work in Scotland, (force 9 gales, driving rain, bitting cold and even more bitting damned midges!)