Hi again –
As for your other questions, yes, sliders are suitable for larger cameras, depending on how large it is. When shopping, look at the tech specs to see the weight limit of the slider in question. You may need a second tripod in some cases, especially for longer sliders. Don’t forget you’ll want a ballhead between your camera and the slider to adjust your shots, and those have weight limits, too.
Personally, I opted for a short slider, and have already used it with good results. I’ll have evidence once the edits are done …
As for no stabilization, with good technique you can do pretty well, provided you’re not zoomed in to the max. If you just get close and don’t zoom at all, plus use some stabilizing in post if needed, along with good skills, all should be fine.