When it comes to planning for family, life will come at you much faster than you thought you were prepared for LOL.
If looking for a practical family car, I'd definatly go 4 doors when getting kids into the car seat becomes involved. 2 doors are a real PITA until kids are big enough to strap themselves in and a little bit of a pain as the gang climbs in and out of the back seat everytime you stop somewhere.
Of course I told my son inlaw the same thing and he didn't listen and now it's a lot of fun to sit back with a smile and watch him play contortionist get the grandbaby into and out of the car seat in the back.
Good luck man.