I'd go further.
My advice is simple. Unless you are always using 'single finger chords' (a misnomer as anything other than a major requires two or more fingers) in Multi Finger or Single Finger modes, then switch to AI Fingered mode. It's 'transparent' to all your usual chords, but then allows you to play all the 'slash' or 'on bass' chords, 'rootless' chords like 9ths and 13ths with just three notes, and lots of exotic chords - try Cm9/F! As your playing and chord knowledge progresses, so AI Fingered mode will meet your needs.
From Grade III upwards, all my students will have changed to a keyboard that will last them for as long as they want. Anything from the venerable PSR3000 to a Genos. Most opt for something like a used PSR-S900 or S910. And the first thing I get them to do is switch to AI Fingered as some of their pieces will need it - as well as a volume pedal and registration sequences. I teach them the basics of AI, and then develop it with them.
Jackie Marsden's three articles should be mandatory reading, but remember that AI Fingered mode goes much further than she had space to cover in those articles. I've been asked to write a definitive set of articles. I'll get around to it at some point!
