2002 Subaru WRX Timing belt

Engine Mechanical problem
2002 Subaru WRX 4 cyl All Wheel Drive Manual 92k miles

I have just purchased a 2002 Subaru WRX with 92,000 miles. I have heard that a timing belt failure could lead to expensive repairs. Should I replace it?

I got some estimates: $475.00 to replace it.
$1,100.00 to replace kit this include tensioners and a water pump (since you are into it anyway, I was told)
$150.00 to inspect the belt. The radiator has to come out?

Asking for advise; Thanks Tommy