That should be enough cross over for them to meet up! Will you be doing a log of some sort? I'll have one for this guy for traveling to Loch Sluagh (because Morla told him there's a prothean buried there /gross sobbing) but that's all I've got planned thus far.

ME2 is definitely my favorite, though the third one has my favorite missions (and Javik). The opening scene for the second one is pretty nuts, and the cast of characters is just incredible. I had different Shepards save either Ashley or Kaidan, but that works! You'll have the choice to get them back on your squad in ME3. Or... not. You know. Mass Effect: Every Choice I Make is Terrible and I Regret it Immediately.