So, the most obvious thing to do would be to go in order of the greatest proportion of existing episodes, resulting in the order of 6, 1, 5, 3, 4
However, while they’ve said the animation release schedule won’t dictate their release schedule, I’m sure animations will be included where available, and Season 5 might as well be more complete than Season 1 once you factor in the animated stories. And every episode that isn’t animated has proper tele-snaps.
I think the fact that it has the second smallest proportion of existing episodes, the least amount of animated, and the fact that the majority don’t have tele-snaps, is going to push 3 to last to give it as much time as possible for all the work that will be needed for it.
EDIT: I realize I have orange for Savages, but that’s because the animation isn’t out yet.