I've got plenty of 210 time. The stall horn going off is not necessarily a big deal - it may just be a bit ambitious. Of greater concern for me would be the poor risk management and lack of familiarity with proper operation of the aeroplane.
It would require a BIG tailwind downhill to get me to take-off up hill rather than down (has never happened!) and you leave the gear down for max short field performance in the Cessna retractable singles. One look at the gear cycling will tell you why.
I have taken a 210 at MTOW off a 600m one-way downhill strip many times at 30o+C temps!
Interestingly, it's actually better to leave the gear down to clear the trees even in Bo - which has a very quick retraction cycle.
Dr
PS - and you DON'T 'rotate' a 210!