Never understood the need for 5 doors cause you got a kid. Had a 3 door car since kiddo was 10 months old. She is 9 now. Never had an issue.
Always found it easier to put a seat in as well when the seat folds forward. Otherwise you got a static front seat to work around.
Anyways, I wouldn't touch that car. Buy an older model and own it. PCP is great, but not if you're worrying about payments on £161. Plus the balloon payment at the end? Sod that.