I have a ESP8266 ESP-12 WiFi Module (Full I/O) Breakout Board. But the board cover whole the width of breadboard, such that cannot insert breadboard wire. Alternatively, I have some pre-cut wires for breadboard, can be inserted under the breakout board to make it fit on breadboard.
I also add a breadboard power supply (3.3V selectable), a FTDI adapter and button for flashing firmware. And wires to lead out the GPIO16, 14, 12 and 13 for future use.
Here is the wires placement: