Overheating engines can cost an awful lot more to repair than the cost of new replacement water-pump parts and ancillary components. Refurbish the water-pump before the over-heating does real mechanical damage, a warped cylinder-head for example!
Renew all the suspect parts at the same time and avoid problems of the overheating variety!
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The sooner you do it, the sooner the over-heating problems will stop.
It may be an obvious thing to say, but renewing all the hoses, hose clips 90450380409045038040 and fasteners 95822060259131406020 at the same time would make excellent sense.
Order all the items you require at the same time and save money by avoiding multiple shipping charges.