Recommendations for suspension mods on a new truck

Have you driven it yet to see if you even need weight supporting mods?
A sway bar will always help and then see what you need. MaYbe nothing, maybe lower spring wedges or stable loads, maybe Timbrens, maybe springs or bags.
But bags will increase sway unless you’re loading the suspension up with a good portion of the weight rather than trying to carry it on the bags.