EasyEDA PCB Adaptation: Update 2G design to 4G LTE modular layout (SIMCom A7682E)

Hello,
We have a working PCB design hosted on EasyEDA that currently uses a SIM800L (2G) module. We need to adapt the layout to support 4G LTE connectivity.

Due to capacity and time availability constraints with our previous developer, we are seeking a Hardware Engineer to transition the design to a pluggable, standard "SIMCom A7682E Core Board". We look for an efficient professional who works well with standard market components while keeping production costs (BOM) optimized.

This is a form-factor adaptation of an existing circuit, NOT a project from scratch.

SCOPE OF WORK & DELIVERABLES:
1. Software: Direct modification of our current EasyEDA project. We will provide the existing schematic and logic files.
2. Layout Modification: Remove the SIM800L footprint and add a 2.54mm pitch dual-row header for the A7682E Core Board. (Modifying the final PCB size is acceptable if required).
3. Power Stage Check: Verify our current voltage regulator and add proper low-ESR decoupling capacitors (min 220µF) near the module's VCC pins to handle 4G transmission peaks (up to 2A).
4. Mandatory Deliverables: The freelancer must deliver the updated Schematic, modified PCB layout in EasyEDA, updated Bill of Materials (BOM), and the Pick and Place / Centroid file for manufacturing.

To filter automated/bot proposals, please start your application with the word "CELULAR4G". Applications without this word will be ignored.