Disclaimer: I replayed this heist and it didn't let me select Daryl Johns. Also, in order to get a gold medal, you have to skip all the cutscenes. The best possible crew for this heist is not the one I used. One of the gunmen should be Norm, but the other should be Daryl Johns, however, you should’ve used Daryl in the Bureau Raid rooftop entry so that his skills would improve. As for the drivers, I used the best possible combo of Taliana in the chopper and Karim in the train. If your Norm or Daryl died in any of the previous heists, the Paleto Score more specifically, then you’ll have to use Hugh Welsh. I’d recommend either using Chef or Packie McReary in that heist, as they won’t die. I used Packie as I had unlocked him very early on and used him in the Jewel Store Job Smart approach, so he would be better than Chef. Packie is the best gunman for the JSJ as Gustavo is very expensive and the other gunmen would die and their casualty expenses would make you earn less money than if you hired a better gunman.