Pete,
I'll need the name of the balancer guy this November when the 2.4 starts to get prepped. I'll talk to you about the aluminum welder as I need a new container for the ice in the A/W intercooler.
Cooling is a touchy subject ... I'd spend a few $ on a TC logger (Innovate TC1) to see how effective any setup is.
http://www.omega.ca/ in quebec for cheap type K thermocouples.
Sandeep