Order of Importance (Teams)

[Fretty]

So, for the longest time I've been working on getting a raid viable team going. I currently have 3 7* characters with another 2 characters close to 7*. After having some discussion in guild chat about how I don't have enough training droids to allow newer important characters to catch up when I unlock them (ie: ST Han after I 7*'d Leia), I was told I should be focusing on getting a viable scoundrel team before anything else, as it will allow me to get the droids and money required to level up much easier. My issue now is that I barley have any droids to train my Lando and ST Han (only mid 50's when my cap is actually 66 currently). It's going slowly, but steadily, and I don't mind grinding away at it, but it 'could' have been much more efficient had I known the correct "order of importance".

So I am asking a veteran here if they wouldn't mind putting order of importance for which teams us newbies should be focusing on first. I don't need to know the characters in each team, as those are already mentioned in other threads, but the priority of which teams to do first would be helpful. The list of priority that I would like to see assumes that each area of the game is unlocked and playable.

My guess now would be:

1) Scoundrel team for heists
2) GW team for GW
3) Raid team for raids
4) PvP team for arena

Would this order be the most efficient order for us newbies to focus on?
Thanks in advance, vets!