2018 silverado 8 speed

[04silverado6.0]

I am going to be working on a tune for a 2018 silverado 5.3 8 speed soon. What are some of the changes i will need to make on the trans side to get good shift quality/driveability on the 8 speed? I have read the tuning school trans book and feel like the changes may be too aggressive for a full sized truck. What would be a good target shift time for durability? Im thinking unlock the converter in 1-5 and 0 slip for sure. If anyone has a stock file for one of these with the tcm it would be appreciated.

[Lumpo]

Did you ever find out any good info your trans tune? I just got a 6.2 with the 8 speed trying to get idea on where to start.