If you don’t know the work history of the truck, bare minimum replace the main rad hoses, the rad cap, thermostat, foam around the rad and probably the fan clutch. Other than that, others can chime in on things like the serpentine belt, etc.
Personally, I only use the OEM stuff. They last a long time so silicone doesn’t make sense to me. Also, silicone hoses can be prone to weeping as they can be hard to get a good seal, especially if there’s any putting in the aluminum. They also require a rolled edge clamp to avoid the cutting of...