Thank you all.
Certainly given me something to think about.
I've been reading up a bit more and I keep reading that a good party has some combination of 3 Tanks and 3 Mages.
So far I have settled on from your posts:
Definites:
Aerie, Minsc, Haer'Dalis & Jaheira and myself (To fill in a role I'm lacking)
Then I think I will choose ONE of either Jan or Imoen as they are both Mage/Thieves. (Probably Imoen to keep Jaheira, Minsc and Imoen together from BG1)
With those I will have if I go Fighter/Mage:
Tanks, Myself, Minsc, Jaheira & Haer'Dalis
Mages, Myself, Aerie & Jan/Imoen
2 Healers, Jaheira & Aerie
A Bard
Somehow though I would like to get a Paladin in their somewhere, either Keldorn or myself as I keep reading about how great Carsomyr is.
If I make myself a Paly then I lose a Mage spot if I get Keldorn then who do I drop?
As I like the idea of keeping the 3 BG1 characters together then that means dropping either Aerie or Haer'Dalis and Haer'Dalis looks like the scapegoat as I need the spells and heals from Aerie.
So confusing

Funny how the part I enjoy most is setting up my party on paper before I even set foot in the game
