I am not a fan of red dot sights, but acknowledge that lots of folks like them for ease of use and fast target acquisition.
A red dot sight gives you neither magnification nor light amplification - indeed, I find that in lower light conditions that the dot decreases my ability to see the target. (But I am getting older and my eyes ain't what they used to be!)
I first went to scopes on hunting rifles because of their light-gathering characteristics, and this is still highly important to me in those valuable few minutes of (LEGAL) dawn and dusk when critters tend to be moving.
I agree with the suggestion of a lower power variable, with a minimum objective lens diameter of about 32 mm.
Doug