yes 

With my Fuji with the 10-24 I have small field of view restrictions at 10-15. 

the bag can hold canon 500mm f4 lens, 

I have the a6000 and a fd50 f1.4 and it allows me to focus beyond infinity. I assume the same would apply to fd200. 

The adapter will mount the lens and you will be able to use it manually. However, my copy of the adapter does not allow the lens to be fully mounted all the way until it clicks into place. It doesn't quite make it, but it's still very solidly mounted. Also, the manual aperture linkage doesn't work properly (on my copy, at least) so exposure is controlled only by shutter speed and/or ISO. You will be able to manually focus and zoom the lens but no VR, of course. It will be a frustrating experience. Instead, get a 14-140 Panasonic zoom if you can afford it!