If there are only a few other windows, adding a larger skylight area might make sense if you use a glazing with low solar gain. Your plans for the room should also determine the size of the skylight unit. A home office, for example, requires lots of light but not a lot of heat gain. Most are packaged for shipping, which means you can't inspect the skylight you're buying at the store. But you should open the packing and inspect it once it reaches your home.
Skylights are a great way to bring natural light into a room.
Careful planning and a thorough look at all your options will help you pick the one that makes the most sense for your home.