I am going to organise a trip to Saxony this year.
If you like some inspiration, I can recommend reading through this chat thread with photos, information and so on from the 2016 trip: Saxony trip 1st of May
The date for the trip is 5th-13th May. I am currently not planning on doing the whole week but my work situation may permit so. I suggest to decide on either weekend (5th-6th or 12th-13th) plus a day or two on either side. If people want to stay longer, the Saxon National Park is a beauty for hiking and history well worth exploring.
In terms of accommodation, I suggest the same youth hostel as last time (8 quid a night or so).
I can probably bring a car a long. But depending on how many people we are, it might make sense to rent another - but the whole trip can totally be done without cars as well.
In terms of getting there. You can fly to Dresden, Berlin or Leipzig. There are cheap direct buses to Dresden from where you take a train towards the CZ border.
Who wants to come along? Which weekend would you prefer? Who wants to stay longer for climbing / sightseeing?