Often "all in one" units are made "To a price" which often means quality goes out the window, and then there is the downside of when the unit fails, 90% of the time you have to change the whole thing.
You really would be better off getting a separate photo cell, and a separate light. With regard to the light, get one that you can easily change the lamp (Even LED lamps do not last for ever) I would also suggest a photocell as shown below, the reason is they are simple, cost less than £10, but they last for ever, I have two (don't ask) must be 20+ years old, still working (And a bit grubby looking) Yes they are "industrial looking" but get them mounted ABOVE / HIGHER (As you should) than the light is, and you will not notice them.