Hangover danger...
Well... what else can you do with it besides keeping your fingers off? :)
About 18m wide and around 40m long (690sqm).
About 20% slope (with 2 "tableaus").
Facing east.
How to best build on the slope with as little earth movement as possible... tent?
Probably the (residential) basement is a must... and a 1.5-story wooden house on top...
Where can you find the right "planner" who designs the right house for this plot cost-consciously. :D
Well... I'll keep pondering.

-SC