I would want to have a second fitting on the tank in order to include the thermal mass of that coolant and reduce peak coolant temps. I also wonder which would return the lower temps, either running the laminova cores parallel vs. series counterflow to intake air. Possibly some testing once it's running would be in order.
At 20psi of boost I've seen pre-intercooler temps over 200°F.
theory.. same temp as antifreeze.. the big metal thing (the cooler is pretty stout that im playing with and all aluminum, so will catch all bay heat and asorb) is in the engine bay asorbing the same heat the coolent is.. expect is to run the same temp.. think of egt,s also and how they will heat soak a head and raise the temps in the head temps vs block temps.... what ever you do make sure no one can get burned... id rig in a vw coolent bottle.. put it in big square box with drain at bottom..
well my worry time for you...