mmmmh... Mine is like this:
Enter the Hinterlands, talk with Mother Giselle, leave.
Go to Val Royeaux (recrute Sera and Viv), then immediately go back to the Hinterlands, do as most as I can of the area (which means there are just a few quests left, like the felandaris one, and 2 rfts which are lvl 12 and the dragon, as someone else mentioned.) Thankfully I've done it enough times that the Hinterlands don't bother me anymore and I have a really good pace at clearing them.
This is because I want them done so I don't have to return after until later.
Then I go clear the Fallow Mire.
At this point I go to Redcliffe to speak with Fiona/Dorian and then immediately after do In Hushed Whispers (I only did Champions of the Just once
). Recrute who is left (Bull, Blackwall).
I have enough after that to do In your Heart Shall Burn and then get to Skyhold.. flirt with the eventual LI to make sure the romance has started (for the dance later on). Talk with Hawke.
Next, I clear up Crestwood speaking to Stroud, and then the Storm Coast. If I can be bothered I do Exalted Plains as well before the next main quest..
Which is usually Wicked Eyes and Wicked Hearts, because I suppose saving the Empress from Corypheus is a more imminent danger than tracking down some crazy Wardens..
(Also because I usually disgrace Florianne in front of the court so I don't fight her, and there really is only very little combat in Halam'shiral and it helps getting XP).
At this point I do a bit of what is left: a few low lvl dragons (Hinterlands, Crestwood and Exalted Plains), companion quests.
Then I go to the Western Approach to kill the crazy wardens and clear that area too (dragon included). (might require a few travels back to Skyhold for the table missions that unlock other areas/bridges..)
Then it's time to do Here Lies the Abyss.
After that one is done I just clear areas in order of level. which means I do Emerald Graves, the remaining dragons, Hissing Wastes, the secret temples/castles, remaining companion quests. Then I move to Emprise du Lion where I deal with Before the Dawn and the 3 final dragons.
Forbidden Oasis is the last, (in those PTs where I've done it, cause I reallllllly hate that place), I want to be there only when I have all the shards so I can finish it in one go.
What Pride had Wrought, Altar of Mythal and Doom Upon the World 