Randy, you could use a temperature controlled circuit to start a fan if it becomes too hot. Want one? Take me a few days to do
Does the carnetix not allow you to adjust the low voltage level? Humm, our SDC does, but I doubt you want to do all that just to get an adjustable low v level. We could do a circuit that allows you that option along with the temp monitor for fan control.
I'm not sure how much it would cost off-hand. Quality linear temperature sensors aren't cheap, even at large quantity (which is why mp Pro Power Controller so much more). But the rest won't be too much.