I did mention this before way back – but yes I went a similar research and logic route – I test drove an ID3 – not the 4 seater my Prius Phev at the time had 4 seats and we found too many occasions where 5 seats would have been useful – grandchildren etc.
I ordered the ID3 – rang Lookers to ask some further questions about car – even tho I rang on many occasions never got reply – I assume they knew car was about to come off scheme – hence I ordered Kona – like you I am so glad I did – Lookers did me a real favour – tho I will never deal with them again!