The cold would be the biggest for me and air movement around the cpu I would try to find a place close the garage inside of the house were its consistant temp and go wirelss with a keyboard mouse for easy moving or maybe a cabinet or something
I am looking at the unanswrd thread like omg 100 views but no one can answr im not that garage smart but if i know it i share
i hope this place jumps off its got 2 weeks :D starting now