One question, why are you on 5? 4.8 seems like a solid choice.

I agree with Fred, why develop for 5? You're going to limit your user base to those running bleeding edge, rather than the typical user who lags 6 months behind.

4.8 already limits the user base a bit. Though not much really.

I appreciate your concern guys, but you should understand that my 'user base' consists of a one-off
electric conversion of a rather dismal kit-car. It is officially meant to show off a bit of innovative spirit
although I'd probably settle for something road legal and driveable withing the given timeframe (a few
months, all after work hours).

Most example apps in QML I found, especially those for Raspberry Pi where done in Qt5, so why not make
the most of bleeding edge tech for a change? The particle engine and n-mapping in Qt Quick 2 look like
worthwhile additions to take a stab at.

I see where you are coming from though .