I've gone back and forth a bit with my ideas.
I think this is where it stands right now:
1.) Male qunari two-handed warrior - romance Dorian*
2.) Male dwarf dual wield dwarf - romance Iron Bull*
3.) Male qunari support spec mage - romance Iron Bull*
4.) Female dwarf sword and shield warrior - romance Josephine**
* There is a solid chance that Iron Bull is going to charm the greaves off of this first qunari inquisitor. If so, then the dwarf will end up romancing Dorian. I am thinking that at some point I will want to do a mage (but I am not interested in humans or elves), so that's why I'm thinking a qunari mage for the third one and, if I haven't done an IB X qunari romance at that point, I will want to explore that storyline with him. If I have (i.e. charmed by IB in my first go-around), then this guy will romance whichever guy I liked best first time around.
** I'm not loving either Sera or Josephine, to be honest. I will want to try out a female character at some point and I have a real weakness for the idea of a lady dwarf being the hero, so I'm sure I'm going to roll a dwarf for my only lady inquisitor playthrough. I really prefer to play s/s romances, if possible, so likely she will be a lesbian and, if I had to put my money down, I'd say that Josephine is more my style than Sera. However, there is a real solid chance that she might end up being bisexual so that I can keep my options open for Blackwall. I'm bummed that he's not an m/m option, so I might still want to give him a go with my lady dwarf. Not sure yet.