Unfortunately, I cannot make a clinical diagnosis over the internet
occasional twitches like you describe are usually benign/normal
the cramps and toe twitching are not specific for any particulat disorder like MS or ALS, so I would not jump to those conclusions so quickly without further evidence or opinion from a neurologist. Parkinsons tends to start with a tremor on one side of the body, or overall problems with slow movement/stiffness.
Your symptoms could even just be muskuloskeletal in origin, time will tell. You should followup periodically with your neurologist.
Good luck