For me the most interesting camera is the c200 as it has the best versatility, it can do great run and gun images with a reliable autofocus for small daily job and be also used to shoot raw on high end projects. I do like the fs5 too but the canon c200 is just better in every area, all I miss now is a good affordable 17-110 all in one lense for those little jobs.
Fyi most of those tricks can be easily replicate and better controled into photoshop, but for amateur it can be a good way to have fun with your camera.
If you want to go the canon way then go dirt cheap on the body as the newer models don't have a significantly better image quality, get a used 600d, eos M or something like this. Download and instal magic lantern on it and use the vision color picture style. Then with the money left get good lenses with fast aperture, a tripod with fluid head and a good shotgun mic with +20db feature like the takstar or the rode videomic pro if you can afford it.
I shot this with a 600d and an eos M and it looks totally fine to me. https://www.youtube.com/watch?v=QB8RsA-AAo4
That said if you can afford it I advise you to get something better strait than a canon dslr, the panasonic G7 is great, the sony a6300 too, both are very cheap for what they offer.
What you feel is right.
I always have a bottle of water, a multitool and some food. Usually I like to have a small umbrella.
It depends on the laws of the country you are in, but seing the situation I think you are totally fine.