So I originally got this game back when it released over a year ago. However, I was too busy and never had the time to invest in it, so I traded it in, got a good chunk of money back.
Now I've got some time and just picked up the GOTY edition. I still don't have a huge amount of time to check every corner of every map and do a 100% playthrough, so I'm looking for some tips on how to get the most out of my playthrough from those who have gone through the game multiple times. I've already had several parts of the game spoiled for me (since I never thought I'd pick it up again) so I'm not too concerned about that (though I guess I'd rather not have DLC TOO spoiled for me).
So here we go:
1. I usually play female, is there any reason playing male would make more sense?
2. Does it make sense to play a specific race? I believe I've read elves have more unique story content (I originally went Qunari).
3. Is any particular romance worth pursing for story reasons, especially now with DLC? I like Sera and was probably going to go that route, but I know Solas is very much tied to the story.
4. What are the key sidequests that I should make sure I finish? Which can I avoid to save time?
5. Is there anything else I should do to get the most out of a playthrough. Essentially what is the minimum ideal/satisfactory playthrough?
6. I don't know where the DLC fits in, but is there a certain point where it makes more sense to do the DLC content?
7. Most importantly, did they ever fix that thing where Qunari couldn't wear interesting armor?
Thanks for the help!
1. Nope.
2. This is entirely subjective. I've played qunari, human and elf. I prefer elves personally. You learn a lot about their lore and history, and even something like walking into Halamshiral was a rich role-playing experience (given that Halamshiral was once an elven palace). That said, every race is relevant -- they share the same world after all -- so I'd say go with the race that interests you the most.
3. Solas' romance is directly tied with the main plot, but that doesn't make his romance inherently superior to the others. It just depends on what kind of story you want, really. If you want a story that deals with the healing of trauma, that can be very sweet, uplifting, and ultimately happy, go with Cullen. If you want something complicated, fraught with difficulty and full of anguish, go with Solas. I haven't played through the other romances so I can't comment on them.
4. There are so many side quests I don't even know if I can answer this. Personally, I like claiming all the Keeps and taking care of the major problems in each map. If you see something like "deliver this, deliver that" try to decide if it is something your character would actually do. Some quests may be a small roleplaying opportunity, like my Dalish delivering flowers to the grave of an elderly elvish woman.
5. I agree with Andraste_Reborn, and would add that my most satisfying playthroughs come from characters I've developed a back story for. It doesn't need to be too extensive, it can be a simple outline of major life events that made them who they are at the start of the game. Since I've started doing this I've had a much better handle on who my characters are, what motivates them, and how the events of the story further change them. It's made for some very rich roleplaying.
6. By making sense I'm assuming you mean storywise. This is also a bit subjective and you'll hear different opinions. I prefer doing Jaws of Hakkon just before the the end of the main game and The Descent in the middle. I don't want to get too heavily into spoilers, so....I suggest, as you progress through the game, familiarizing yourself with the premises of Descent and JOH and see if it fits. In The Descent you're investigating earthquakes, in JOH you start out assisting an archaeological team. And of course, Trespasser is the epilogue, so that's at the end no matter what.
7. I'm not a qunari armor expert, so what Andraste_Reborn said! 
I hope that was helpful. Enjoy!