Personally, if I just had those mods, I'd stick with superchips...
SCT does have additional cost, either ging to a dyno which it seems you want to do, or buying a wideband to send the datalogs to the tuner (Hemifever would be a good choice!), it just doesnt seem the slight gain on a nearly stock truck would be worth it.
Especially since you can get superchips used for about $200.

However, if you do get SCT, if you later change your mind on mods for your truck, you'll already have it and be ready to rock!