I can give you some pointers from a teacher's perspective...
Nearly everyone I teach has gone for the Bozza Aria from List B. It's main drawback is that there are absolutely no rests at all (after the 4-bar piano intro). It also requires good pp and ppp playing, and secure intonation. I've just had a student get 28/30 for it, and the examiner commented 'what a lovely piece' after she had finished playing. It's never a bad idea to play a piece that's appealing to examiners.
I've had a number of students play the Bach G minor (it was on the old syllabus too). If you choose this, you need to practise with the accompaniment as much as possible, as there are a number of tricky entries. The Mozart D major is another possibility, quite straightforward note-wise, but challenging in the way only Mozart can be. I haven't had anyone do the Telemann yet, but that is another straightforward option.
For List C I personally like the Telemann E minor Fantasia, but my students have gone for Jade (from the Blue 76 Graded Studies book), the Kohler Spanish Caprice and the Stokes Jazz Single. If you like the look of Jade, make sure your dotted quaver-semiquaver pairs are in the correct 3:1 ratio (note the direction bien rhythme).
Hope this is of some help.