i'm a little late to the party, but if it was me processing 1 frame at a time,
i would actually cut the frames ahead of time and make something
akin to a falling plate camera that just exposes 1 frame at a time.
it wouldn't be hard to make a camera like that, it would be like a box camera
that you have your frames in little metal septums ( or cardboard, or plastic or ... not )
and you shuffle the frames inside the camera like a grafmatic back or bag magazine ...
you get each frame exposed, and then in the darkroom you pull them out of the septum
to slide them into something like a FR tank 1 frame at a time ... and process them by rocking
the cube or stand developing them ...
its funny you posted this .. i was just thinking "wouldn't it be great" ... if kodak created a camera that was multi-media
sensore+flim, where you flipped up the sensors, and a frame of flim cold be exposed and flip the sensore down for the whole numeric thing .. kind of the best of both worlds that they seem to be forever trapped in,
not wanting to commit to just one ...
good luck !