Growing up with my sisters there was an 18month age gap between my older sister and I and then another 5 years age difference between my little sister and I.

It was a lovely age gap. The 7yr age gap never stopped the eldest and youngest from doing things together and getting along. In fact they used to gang up on me alot (and yes I still suffer middle child syndromme because of it )

There was alot of fighting but I think that is normal between 3 kids esp 3 girls!!

Good luck planning your gorgeous family!