For that type of video, you need a wireless lav system (I like the Sennheiser G3 but an Azden system will work in a pinch) and probably a fixed-lens camcorder. I'd take a look at the higher-end of the Sony Handycam line or the Panasonic X1000. If you don't need 4K, JVC and Canon offer some good options that are a bit cheaper.
