well, as long as it looks great i would say its all fine
it could be that your floor or furniture is darker then then one i got in those images, that will influence the light as well. but you usually cant reuse settings from one scene in another, but you can use those settings as a start, and then adjust them according to your scene. if a multiplier of 4 works for your scene then its all good and i don't see any reason not to use it. you could also try to play with the camera settings. i usually don't change the sun multiplier, and it works fine most of the time. you can do a a lot with your camera to adjust the light in your scene.
Olli
it could be that your floor or furniture is darker then then one i got in those images, that will influence the light as well. but you usually cant reuse settings from one scene in another, but you can use those settings as a start, and then adjust them according to your scene. if a multiplier of 4 works for your scene then its all good and i don't see any reason not to use it. you could also try to play with the camera settings. i usually don't change the sun multiplier, and it works fine most of the time. you can do a a lot with your camera to adjust the light in your scene.
Olli
Comment