I've concluded the project for the time being. Yesterday and today I made a lot of further changes to the arrangement (after closely listening to the original).
I've decided to choose a Ketron SD 1000 trumpet for the main trumpet and also the SD 1000 clarinet. All the other sounds are still from Integra.
So this is the final version (unless some time I replace the trombone by my own real trombone playing in case I get back in form).

https://soundcloud.com/rorosetree/midnig...-ketron-sd-1000