i didn't let my dalish warden being dalish affect my decision of who i will romance, i won't let it affect my decision in inquisition either. i get why you might consider picking someone more "appropriate" but i mean its really up to you and how you roleplay the game.
I wasn't really letting the fact that my first Inquisitor is going to be Dalish affect my choice of LI (if I was playing as a human, I'd probably have a go at romancing Sera anyway). It's just that the fact that Josephine greets a Dalish Inquisitor in Elvish that's making me rethink who I plan on romancing. Really, I leave the LI up to the personality I have planned for my PC, so it really has nothing to do with race... well, unless I'm playing as a dwarf. Then I'm probably not going to romance anyone because of the height difference (at least, in DA:O). Actually, most of my Wardens were elves and most of the ones that had a LI ended up with a human. Not to mention that 4 of my Hawkes have romanced either Fenris or Merrill.
Is that really all it took to make you change your mind? I have a tendency try not to plan ahead the love interests concretely. I learned that first hand when I played Origins the first time. I knew I liked both Morrigan and Leliana and I had two Wardens. But the Warden I that I had intended for Leliana fell for Morrigan and the Warden I had thought would work better with Morrigan fell for Leliana.
My tentative plan for my first Dalish Inquisitor is Sera, but for all I know I might like Joesphine better. Hell, it could even be Cullen or something. But probably not.
Well, tbh, I seriously wasn't expecting anyone to greet a Dalish Inquisitor in Elvish other than a fellow Dalish elf, so it was a huge surprise to see Josephine greet a Dalish Inquisitor in Elvish. Since I'm a huge Dalish fan, that instantly made me like her a lot more than I already did.
I usually plan my LIs out ahead of time because I know that I'm going to get to them all eventually, so all I need to figure out is which order I'm going to romance them in. But I see what you mean. I originally planned to romance Morrigan in my first DA:O playthrough, but I eventually went with Leliana because I felt that her romance was a lot easier. I also wanted to romance Seb in my blood mage Hawke playthrough, but I realized how much chemistry my Hawke and Merrill had, so I ended up going with Merrill. 90% of the time, though, I stick with whichever romance I planned to go with.
As for DA:I, since we're still waiting for it and we don't have a complete grasp of all the LIs' personalities yet, it's tricky just to stick with going with one LI first. I originally planned to go with Sera, then something pulled me towards settling on Solas, and now Josephine greeting the Dalish Inquisitor in Elvish is making me rethink who I'm going to romance first yet again. Damn it. :/