Welcome HABOT to the community.
You’re out of luck on Reset. It’s tied to the reset pin on the device. The only way would be to void your warranty and cut a track - it’d also be a risky thing that I wouldn’t do.
Is there a reason you want to do this ? I’d opt for a different solution - wire up some buttons myself !
LDR0/1 may already be interrupt capable so you can try that - but remember that you can’t use them in the early boot stages as they have specific function before netmf is in control - so again it might just be simpler to find another way of achieving what you need.