Door Lock Project with PIC18F452

Hi,
I have got a semester project, where we need to design a "Door Lock Project with PIC18F452". Here are the details of the project:

1) There should be a 4 digit pin code for authentication, for that we will use a keypad and an LCD.

2) A solenoid valve to open the lock/unlock the door.

3) A GSM module for notifications i.e. if there's invalid try.

We are not using Wifi, we will just send SMS notifications to the user.

Google has helped me a little and I found few useful links to start the work. This one has the keypad security but it doesn't have the gsm module in it. https://www.theengineeringprojects.c...ontroller.html

while this one has the gsm notification system, it has alarm but we can modify it to notification https://www.instructables.com/SMS-Al...crocontroller/

So, all we need to do is to combine the two codes together, so anyone could help me in here, really obliged.

Regards.