I decided due to the lack of community support I am not going to make a Zigbee 433mhz chip instead I will continue my efforts with the WiFi esp8266. Now that I have the 433mhz working with the esp8266 I will be performing some distance testing with a few receivers I purchased and different antennas I have.
Update to: https://silocitylabs.com/post/2017/12/01/smart-things-433mhz/