Walk in cooler conversion help

[jokensmoken]

I posted this last week in the conversion sub forum and got no response.
I'm hoping for some help here.
A friend wants to introduce smoked meat to his resturant menu and asked me to advise/assist.
He has an older double door medium size cooler he thinks could be converted to a smoker to get started.
I've smoked meat for 30+ years and built a few smokers but have never done a fridge/cooler/freezer conversion of any kind and need some advice on things we need to know.
I have not seen the cooler upclose so can not answer specific questions about it but I've read about some insulation issues and will check into that...so, other than insulation and coolant (if it even has any left in it) what other things do we need to watch out for while doing this conversion?
Any and all tips or tricks would be appreciated.
TIA folks
Walt

 

[dernektambura]

a bit more detailed info would probably attract response....cold smoke..? hot smoke..? smoker/aging room combined...?

 

[fivetricks]

Yeah, I think you'd get way more help once you've seen what you're working with and have some pictures to go by.