SOPP645: These organ shoes would be very good for my funeral

his question was sent by Katrine, and she writes,

Thanks for asking about this Vidas.

1. To be as fluent and reliable at organ playing as I am at the piano (professional accompanist/repetiteur by background)
2. Getting the set-up right for feet and being confident that I am practising in a way that will lead to accuracy - not sure if stool height is correct, shoes are perhaps too wide etc. Unclear on where feet should be able to reach (get pain in legs if I stretch too far and have hurt knee trying to insist with my right leg that it can reach the bottom notes!) and not sure how best to practise pedal scales (have seen varying advice on toe/heel use).

Many thanks!

Katrine