PCB Design with SIM7000A

We need a PCB design with 3 main componenets: - WIFI module/controller (ESP8266 or any recommendation): this will control whole system and send requests if wifi is available. It will also control power usage to improve battery life. - SIM7000A: will be sending post requests every 15 minutes about sensor details. - Must have 3 input pins (analogue, vcc, gnd): This will be reading an external hall sensor with cable. - Battery: 3 volts battery. - Button 1: Although the device will send automatically every x time, it should be posible to make it happen with a button. - Button 2: Will enable WPS connection to wifi. Things to take into account: - The final product must be water proof so please consider in PCB Design. - The device should be easily flashable with an arduino IDE to make adjustments or updates.