I don't think you'll have too much trouble getting some good Ha images of the nebs there, Chris. The closest of them is at least 11 degrees away... that's 22 Full Moons. I wouldn't try if they were closer than that otherwise the glow would get too overwhelming. I'd have a go and see what results I got, then based on that, I would know for future reference just how close I could get without washing everything out.
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