5 people with baby. This is on the assumption that you will also carry extra luggages + stroller.
imho, a sedan may not work out. Why not get a second hand innova? This way, the back end can contain your luggages + stroller, and the middle one can seat 3 people comfortably.
the way second hand innovas sell these days are in the vicinity of 550-600k for a 6 year old model.
and yes, second hand fortuners, everests or montero sports would also be good. pasok pa naman yan sa budget mo eh.