The VHS ESPixelPOP kit contains all you need to get started (except for a 5V power supply) and includes the PCB, all parts (including the ESP8266 module) and a 1 meter length of WS2812 Pixel strip so you can start your own light show immediately. I have already loaded the ESPixelStick firmware on the module so once you have assembled the kit, you simply need to follow the build guide to get it connected to your Wi-Fi network.
If desired you can load the WLED firmware onto the module and take advantage of it’s many built in effects rather than depend on controlling your pixels via an application streaming E1.31.
You can also add a inexpensive RS-485 adapter and turn it into a wireless E1.31 to DMX bridge.