HVAC: Coolroom insulated reefer design

Hi all

I'm looking to build a camper out of this truck for long term living. I considered an actual reefer body but they are too heavy/small for my needs.

I'm thinking of lining this with freezer panels.

I'm hoping to get some advice on what I need to think about to have a good outcome.

What kind of freezer panels - would like to minimize thickness to maximise internal volume.

Vapor barriers

Thermal bridges

Anything else?

Thanks for your help and advice

HVAC