Hi,
Its great to hear that you decided to go for harveyi! You would most likely have been strongly disappointed but paros can really be managed with some planning and also learning by doing.
What orther fish have you bred? Are you familiar with blackwater tanks?
I hope you will enjoy the trip to Hamburg. Its definitely worth it and Bernds breeding station is simply impressive. If you have any further uncertainties about it, feel free to ask!
Greetings Rafael