I see it says "Maximum bulb wattage 25W " and I think you would do better with the lowest power you can find. Ordinary LEDs are not dimmable, they can be bought at higher price, and need a compatible dimmer.
Consider what is the light output of your current fitting. A landing light over a large hall and stairwell might be in the region of 150W incandescent, which gives around 2400 lumens. This is quite a lot.
www.energy.gov/energysaver/save-electricity-and-fuel/lighting-choices-save-you-money/lumens-and-lighting-facts
I use a single very large LED globe of 24W which gives about the same. Some of the light will be wasted if there is a dark shade, or if the bulbs throw it upwards to illuminate your cobwebs.
The ads for your golfballs will tell you the nominal lumens output of each lamp. If you have 20 of them I think it will be rather bright.
Have a look at the current light and consider how bright it is.
Working on Watts is a bit misleading now, because different technologies give different lumens output per watt. The latest LEDs are brighter, for the same power, than the ones you could buy a few years ago. Dimmable LEDs are a bit less efficient so are dimmer even on full power.
If you buy standard LEDs from a quality maker such as Osram or LEDs, they will last for many years, and probably still be going when the next homeowner throws them in the skip. Higher power LEDs burn out faster because they often use much the same components, running hotter.