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Regarding eyepieces - you’ll probably find the range 40 downto 10mm useful, and with the SW 180mm mak there’s a sweet spot with eyepieces around 13mm focal length. Occasionally you could go as far as an 8mm on very still nights.
Photography through the mak cassegrains is limited to moon and planets and you may even want to double or triple the focal length for that.
For photographing DSOs though there are several options depending on the aperture, focal length (and f/ratio) and the image scale (microns per pixel) desired.
For small scopes say 80-130mm aperture a refractor is hard to beat.
From 150mm aperture / 750mm focal length though you’re better off with a newtonian or Maksutov Newtonian (much overlooked IMHO).
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