Personally, knowing that a 60 watt bulb is enough to give decent light in my small bathroom, I think it's going to overwhelm your tank and probably do a great job of growing algae. It might be bright enough to stress out your betta since they tend to be shade, dim light, loving fish.
One of the first things I tend to do when I get a tank that comes with a lid is try and find a glass lid that will fit the tank, that way I have more options when it comes to lights. If I can't find a glass lid I will make a cover out of plastic craft mesh, or keep the water line 1 inch below the top of the tank, that way I can choose my own light and keep the betta from trying to explore the room, and then 'll put the lid, that the tank came with. back on at night to slow down water evaporation.