Congrats Ace. If you don't have any children at the moment, it's not easy but manageable for two children plus parents to fit in the ISF. I have a 10 month old and a nearly 3 year old. I guess it also depends on your height and the front seat passenger's height. My wife is probably just below average height so the rear facing seat goes behind her on the nearside and my older daughter's forward facing seat is behind me. Don't get me wrong,it is a bit of a squeeze but as I say it's manageable. With two rear facing seats it might be a bit awkward depending on you and your partner's height. If you already have a child then all of the above is irrelevant as you will need another car!