Pros..... nothing (using an afe prodry filter may give u the benefit of it being reusable without the maf/oil issues of the k&n.
Cons.... u removed 2 filters that have zero effect on your performance and mileage.
If k&n, u just bought a filter that may or may not foul maf sensors (u have the ppl who say they do and ppl who say they dont).
Id say leave it alone, or if u must tinker, use the afe pro dry.
If this is a 4.0 1grfe, the engine has been dynoed with stock filter, and then with no secondary filter and showed zero gain.
Same truck same day same conditions was also dynoed with absolutely ZERO air filters installled.
Zero changes other than the normal dyno variances that occur on every vehicle even back to back.
Save ur time, drive it.