Narrow RF seat needed. Three children in a row???

[AddictedtoSnickers]

Hello

Does anyone have any experience of fitting 3 children RF in a row? I currently have 2 Britax 2 way elites with Maxi Cosi Cabriofix with an Easybase in the middle. DC is now 15 months, 12kgs and needs a new seat. Nothing I find online looks slim enough to go in the small space. Have looked at 2 way pearls but they are isofix so would not go in the middle (isofix on rear oassenger and driver only). Other problem is the car has storage boxes in the floor which means foot props are a bit of a no no (Citroen said to extend the easy base prop to the floor of the box, but I'm mot overly happy with it)
Have looked at the Joie seats (tilt and Steadi) which look slim....any positive reviews? Britax Hiway and Max way are supposedly narrow but would be too wide.
Anyone achieved the impossible with 3 children? (Ps DCs are aged 5,3 and 15 months)

You should be able to get fillers from the vehicle manufacturer to enable a foot prop to be used - vw ones cost £17 and I can't see Citroen ones costing much more.
Not sure about slim seats though.

I'd move the 5 year old into a slim high back booster in the middle seat.

Another vote for putting the 5yr old in a booster in the middle