I would get a vintage nikon 70-200 if you are only doing video, canon 70-200L for photos. Personally, I don't see the benefit of IS for sports photography, because a high shutter speed/support will render it unnecessary. For other uses, there are benefits, but ultimately this is for you to decide (cost vs features).
For the mid-wide, something like a 24mm or 28mm, f2.8 or faster. Should give a roughly 35mm perspective, which is nice because it isn't aggressively wide, but not too tight to use for indoor/small group shots etc. You could go 35mm also for a 50mm equivalent, I had a 50 (equivalent) for a while and while I really liked it for most things, a 35mm can be better for indoor/group shots etc.
If you get a 70-200 f4L, then I would suggest you also pick up an 85mm f1.8 for a fast mid-tele. I would still suggest it regardless, but more so if you don't have a fast long lens. This will be great for portraits, head shots, and even shooting some features from a tripod.
Last one (though not in order of purchase/priority) would be a helios 44-2. I would almost suggest you get this one first. It is usually only $20 or less, and it has great character. It is full metal, the focus ring is great, and it is just a really cool lens. I would not suggest the canon 50mm f1.8. I can't stand this lens. It is made so cheaply that it feels like it will fall apart in your hands (worse than any kit lens I've seen). The focus ring is awful, very small, and the AF is also awful. I borrowed a friends and had it on a 1dmkii n and it simply can't focus in low light. So why pay 5x as much for a lens that is 10x worse than the helios?
So overall, Tokina 11-16, 24/28/35 f2.8 or faster (vintage or canon), helios 44-2 (58mm f2), canon 85mm f1.8, canon (or nikon for strictly video to save money) 70-200. This seems like a killer set of glass, and then later on you can add things like 300mm+ tele's, a fisheye, macro or tilt-shift lenses etc. Last thing I would suggest is a decent fluid head, especially for the long lenses for video, and don't forget about audio of course.