first off, with SCT get a custom tune from one of the reputable vendors here. There are a few. Most offer 3 basic tunes. Street, Tow, Economy.
Street: Daily driver, hot throttle response, firm shifts, more advanced timing. High HP and TQ. Can tow usually up to 8 to 10K lbs EGT's rise fast with this tune.
Tow: Milder tune, firm shifts, less timing, Cooler EGT's. Usually lower hp but high TQ tune for towing up to the rated capacity of the truck. Some of these use the VGT turbo as an engine brake also.
Econ. Milder than stock. Very slow throttle response, less hp/tq then stock. Very slow. Basically removes fuel from truck to keep hot foots from burning up fuel. But this tune will get worse mileage then "street" tune, if street tune is not hot rodded. Pesonally I would call this the "valet" tune. Great if you need to lone truck to someone, or have valets park it....
some tuners also offer an "extreme Street, and "Race" tunes These are very high hp (up to the max that the fuel/turbo system your truck can support) and can be used as daily drivers/race tunes, but should never be used to tow with. You can blow things up really easy with these tunes and a heavy load. But if truck is unloaded they are fine to use at WOT, provided you have a EGT guage to watch temps. Usually these tunes are in the 400 to 420RWHP range. Some also offer "studded" versions of these tunes that are 10 to 20 rwhp higher, but these are completely maxed out tunes for stock trucks with good exhaust.
If you have studs, and EGR delete, you should be good with any of these basic setups. you willl need good exhaust system and delete your cat converter if you want to gain full benefit of these tunes, and increase the overall longevity of you engine.