Hans,
To put things into perspective, my playing is probably best described as "below average"!
If you just want to play any toccata then why not the toccata from BWW 565 - Toccata and Fugue in D minor. Ignore the fugue for now. The toccata is quite easy.
Alternatively, just stick with the Boëllmann (Suite Gothique). It is like a cut down version of the Widor 5, tune in the pedals, stabbed chords with left hand and twiddly bits with the right hand. It is not too difficult once you have jumped in, the tune repeats a few times so you only have to learn a little to play a lot.
The only problems for me were (still are
):
► Being able to play different rhythms with the left hand and the pedals;
► The part where it returns to the initial key.
The advantage is that when you have completed it, you can play a tune you like!
Regards,