If doing handheld work I would recommend looking into a camera/system that has in-body image stabilization (IBIS). The M200 is not a good choice for handheld shooting because it doesn't have IBIS. For this sort of work, I would recommend a Micro Four Thirds camera. Olympus' IBIS in particular is highly effective. Something…
Re: bigger sensors have less noise. Yes, this is true, but in real-world use, and especially your use case it doesn't really matter. Compare the Sony A7 III to an Olympus EM5 III. At the same ISO setting the A7 III will have significantly less noise. However, if you need to stop down to F16 on the A7, you may need to use…