Bosch Solution 2000 / 3000 Alarm Integration

Hi guys,
I’ve been looking around and haven’t found any way to integrate a standard install (even with the ip kit) of a Bosch solutions 2/3000 to HA but have an after market solution that would also work on any alarm.
Hoping for some thoughts.

My objective:
-keep the original Bosch alarm system and existing features.
-to arm and disarm through HA with code input and automatically via geo zones.
-have HA know the state of the alarm so to trigger automations.
-as cheap as possible
I’m not fussed about the states of sensors and doors but it can be done.

Konnected Alarm Panel INTERFACE Module


Pro:
-made specifically for alarms (has resistor settings inbuilt),
-6 zone monitoring (arm/disarm, pirs and alarm states).
-comes with a relay that integrates (included) for arming and disarming via HA.

I looked at another Option:
SONOFF RE5V1C - 5V wifi inching/selflock relay module
https://www.itead.cc/sonoff-re5v1c.html

I already have Ewelink set up on HA for my sonoff so this will integrate easily.
Pro:
-cheaper
-arm/disarm
Cons:
-no way of zone monitoring that I can see
-no way of arm/disarm monitoring that I can see

Just need to be able to change a zone to a key switch zone for arming and disarming (going to the relay) and a contact to open and close on the alarm panel to signal the arm/disarm state.