What suspension upgrades i should consider for my truck?

On the hitch extension front, take a look at the Torklift Superhitch. For the most part the hitch extensions on etrailer are for light duty purposes. The 24"-34" extension is just the bar, and will rattle and flop about without stay chains and turnbuckles. They leave figuring out the stay chains and where to attach them to you. The Torklift is not cheap but it is a completely engineered system ready to bolt on to your truck.