Holidays are over, & its back to work, so I will have less time gaming. I expect game time for DA will be much less. I played DA also like a speedrun, charging from one objective to another. I think I will slow down to appreciate the last 35 or so hours of gameplay left.
I think there is still 2-3 main areas left to open, & about 1 main area worth of area opened but not fully explored.
I recommend leaving one or two regions before you finish the final main quest. It also just makes sense in the whole context, because even after you kill the final boss, Inquisition will still go on.