I talked to a guy this morning from Deleware. He's running a fairly similar setup to yours. I did tell him that he will notice a BIG difference in towing between the NVK5 PCM code he presently has and the PMT1 he would be getting. Unless you have changed your PCM, you're still using the original PCM code as well (since the Banks chip is a 2-bank jobbie).
You can always adjust the wastegate to keep tabs on the boost. I'm going to say that you really shouldn't have an issue with boost levels.
You have a really solid foundation there and I know that you'll notice an immediate improvement. Banks has some decent tuning for sure, but until you try something totally different, you'll never know how good it can be. Besides, being able to change the truck's overall personality with the flick of the wrist is something that Banks doesn't let you do.
Oh, and I wouldn't call it wisdom.
But thanks for the compliment!