In an ideal world, you would forgo analysis in CAESAR, not because CAESAR doesn't give you the answer you need, but because you know CAESAR will predict what you already know.

I would expect that the line temperature remaining hot could be a point you would like to revisit.

I have earned my own repudiations for establishing underground loops to address temperatures the end user refused to budge on. Maybe you can have better luck there.

Similarly, you can try calculating heat losses to the earth and recommend your own temperature.