SOPP680: My dream is to play Buxtehude and Bach reasonably well and to be able to improvise simple but beautiful melodies for the church service

This question was sent by Rolf, and he writes his answer to my question, What is his dream in organ playing right now, and also what are some obstacles in reaching this dream?  So,

1. Playing Buxtehude and Bach reasonably well and being able to improvise simple but beautiful melodies for the church service.
2. Earlier there were three things: time, money and lack of knowledge. Since I am retired two things: money and lack of knowledge. I can study well on my own and there are plenty beautiful instruments in my house and churches around me.
Greetings
Rolf