I like the bright windows, but I am worried if it will be too hot in summer(Houston)? Will the tint reduce the sun heat in summer?

 

It'll reduce UV light and glare entering through those windows, which essentially reduces heat. You still have the issue of the windshield. I'm not sure if there will be a huge difference but you won't have to worry about one side of your face burning during sunrise or sunset if you do decide to get them tinted.

 

Tinting the sides will reduce some heat, but it will definitely help with the sun coming in from the front windows.