Not knowing what kind of driving you do or on what roads it would be hard for me to give you definitive advice one way or another. I do a fair amount of stop and go driving. Having the cooler mounted so the fans can move air over it was a solution for me. I went with a larger cooler to allow for the reduced efficiency on the highway. If you do a fair amount of highway driving then your set up will likely be adequate.

And you are right about the crap shoot. These cars are full of wonder. Wonder how long this will last, wonder what the engineer was drinking when he came up with this, wonder why a 5 speed wasn't an option, wonder, wonder, wonder....