Hi,
I have developed several GPS based device before. we can use uBlox, SimCom, or another manufacturer who has integrated GPS + GSM module. for MCU, we can use AVR, STM32, or everything you prefer with. let's discuss it over chat.
I have became PCB designer since 2012 and has developed lot of projects, from hobbyst to military used. This project will be battery powered and I will use Lithium battery management IC to manage battery charging.
Let's discuss it over chat.
Best Regards,
Rijal