M66 PCB Module Design

I need a PCB module design for the M66 consumer electronics project. The design should prioritize low power consumption and incorporate a microcontroller unit (MCU).

Requirements:
- Circuit design
- Gerber files

Ideal Skills:
- PCB design expertise
- Experience with low-power electronics
- Proficiency in generating Gerber files

M66 PCB Module design work - Only circuit and Gerber is required.

1- 1 UART for the use
2- 1 UART for the Debug
3- 1 UART for the GPS , connector Required
4- Input Range 5v to 6v for the Battery charging
5- 3.7v , 5000mA battery connector
6- 3.7v , 5000mA Battery Charging system with Fast charging (Full Min 4Hr)
Over charging protection, Under voltage Load protection and Temperature protection cut off required.
7- Nano SIM connector
8- Antenna connector with Facility of solder the Wire antenna
9- ADC pin use for the Input voltage Read and battery voltage read.
10- 512KB EPROM memory with SPI
11- Our goal is to minimum Power consumption from the Circuit while on battery.

Only 4 connector is required
GPS (4pin) , Battery(2 pin) , Charging (2 pin) , Code Download and Debug UART (4 pin)

12- Onboard PCB based GSM antenna and Tip to connect the UFL antenna
13- 2 Digital I/O with Optocoupler
14- UART Pins for Programming and Debugging
15- Memory connector to SPI / I2c If possible.