Hi @Michaelluke !
For transmitter/emitter pair, I can recommend Radiolink: RadioLink electronic - RobotShop
For the lights, you could use these simple R/C lights from Dimension Engineering (same manufacturer as for Sabertooth):
https://www.robotshop.com/products/dimension-engineering-ultra-bright-led-2x-white
https://www.robotshop.com/products/dimension-engineering-easylights-rc
I hope this helps.