Help me with my party

Well its my first adventure for BG1 and i cant decide which party ima do.

I have this atm:

ME: Pure thief. (maybe i dualmyself to warrior also in a future)
Dorn
Ajantis
Imoen. (i want to dual her to a mage, at what lvl is the best to dual her?)
Minsc

and for last char i cant decide.

Should i take Edwin or Neera?

Maybe another member? i dont know. what u suggest? ty for help