Re: Conversation course (German)
I am a German teacher and I would say a conversation class is a real bonus! It will give you the chance to apply the learnt and language learning is about being able to communicate. Just make sure you find a conversation course where the teacher is not too obsessed with grammar and mistakes but lets you talk as much as possible.
You could also ask you teacher to model a class around what you currently learn in your other class-i.e. if your current topic in the class is food, politics or whatever, you could ask him/her to model the conversation class around that topic (e.g. role plays...).