replace timing belt early if repairing head gasket leak? on 2003 Subaru Impreza

I have confirmed that I have an oil leak on the left head gasket (and smaller leak on the right side). There are 87,000 miles on the car. Does it make sense to get the timing belt + pump replaced now to avoid taking everything apart again at 105k miles, since I am getting the head gaskets fixed?

Asked by for the 2003 Subaru Impreza
Absolutely change the timing belt ,belt idlers and oil seals now and avoid the duplication of labor in such a short period of time again.