Very nice work! When I see a gifted photographer, it makes me a little jealous, not just of your eye, but of the photographer’s ability to manipulate light. There are a number of shots there which you could probably shoot with a video camera and minimal lighting – but there are several which would be a bear to shoot as well on video.
Even more than before, I recommend that you avoid buying tons of video lighting (and other) gear, and adopt a hybrid approach: shoot video when you can use existing light, and shoot stills for everything else.
Stills photographers can do so much with time exposure, multiple exposures (essentially what Bill D described), that video folks have to bend themselves into pretzels to emulate – and why bother?
In your situation, since you’re an ace photographer, I’d still recommend that you leverage your still photography skills and the flexibility of still photography to the hilt. Buy a slider, and shoot some video that is obviously a “moving picture” because you’re moving past a tree or down a hallway; and then cut to a still that you’ve animated with After Effects (or even inside your NLE) to create a zoom, tilt, or pan – or all three.
NO, it won’t be exactly the same; it will feel a little “flat” compared to an authentic video move. But I’d rather see the beautiful still, than the crappily-lit video clip.
btw – there’s more to good video camera work than the continuous lighting – it takes awhile (and an expensive tripod head) to learn how to make smooth, well-considered camera moves. Whereas, if you shoot a beautiful still, you can animate it all sorts of ways in post.
About buying “budget” HMI equipment: I don’t know about the pluses and minuses of budget HMI gear, but I suspect that the reliable brands of HMI are expensive for good reasons. Sorta the difference, in still cameras, between Hasselblad and … Instamatic?