I tried out a Minikid in my Fiesta recently but it seemed like it was going to be far too upright for my baby, and the passenger seat couldn't go any further forward. I know there is a wedge you can get to recline it further but the assistant said they didn't think it would fit as it didn't have space to go further back. In hindsight, I wish we had tried the wedge just to see if it could fit at all.
Otherwise we are ruling this seat out and have to get a seat that will only take her to 3 years old or so then buy a third one. She needs more of a recline than most children due to her head shape pushing her head forwards, and she sleeps a lot in the car. She is very tall hence why she will outgrow an i-size (105cm)/18kg car seat sooner than the 'average' 4 years they state on them, and I want her to be rear-facing for a few years yet. If I go with a smaller seat, I know which I am getting. Just wish I could get one of the 25kg seats and be done with it but it seems like we can't get the recline we need unless anyone has any insight on here.