I wouldn’t use smart bulbs, as the bulbs are connected to switches. It’s generally not a good idea to use smart bulbs on switched circuits for a couple reasons. Smart bulb life can be adversely affected by being switched on and off regularly. Additionally, the switches may get turned off manually, rendering the bulbs inaccessible to the home automation system.
Instead, replace the switches with smart switches. Then, presuming you are using SmartThings, you can program it so turning on one of the switches will turn on the remainder.