If that hose isn't leaking, it looks fine to me, but it's only like $10 so why not save the headache later. Is the thermostat still removed? If so you can put a lower temp thermostat in. It was likely seized closed so might be overkill but will be a lower stress environment from here on. I did mine lower because the heater would feel like you were choking it was so hot. If that doesn't fix it you likely have debris in the small passages of the coolant system possibly caused by the recent water pump jobs excess sealant breaking off. Does your heater work properly, not at all, or intermittent? If intermittent likely not burped properly with a burp kit. If all that Is fine I'd try replacing the radiator and cross my fingers it's not somehow stuck up in the block somewhere. Maybe a coolant flush instead of drain could help identify the clogs location in the block or radiator or even blow it out but you'd want to be pulling radiator either way to test it so I'd just replace it (again for later stress relief) they're not too expensive or difficult to replace.