Hi,
I would suggest ditching the Smartthings Hub and going with native integrations into HA.
In regard of the current technologies to be used by lights, the best choice I consider to be Zigbee (however 
there is a big issue with the Zigbee as it is not really a standardized set in the sense Z-Wave already is). As a result, nearly every manufacturer has its own Zigbee implementation. If not willing to go DIY in order to be able to control a great variety of Zigbee products (Zigbee2mqtt: getting rid of your proprietary Zigbee bridges (Xiaomi, Hue, TRADFRI)) then I suggest getting the Philips Hue and for a budget option a Gledopto led driver at 30 USD (https://www.amazon.com/Zigbee-Controller-Compatible-Lightify-Control/dp/B075SZZS49/ref=sr_1_2?ie=UTF8&qid=1544029711&sr=8-2&keywords=gledopto) or 20 USD from aliexpress to go with the led strip of your choice.