Well done. This is great stuff. We took delivery of a 2 door BD last week and opted out of the factory "sound deadening" in order to follow a similar path. It sounds like you had a significant improvement on the road/wind noise and I am sooo glad to hear that.
If you did it again, would you...
I paid $52,000 for a new 2017 F250 ($60,800 MSRP) at the end of that year. The dealer is buying it back from me for $49,000. Effectively rented it for $71 per month for 42 months. Crazy times.