Sinhagad sunrise run on the 450X, anyone tried it on one charge?

Planning an early morning Sinhagad run on the 450X, leaving by 5 to catch the light at the top for some photos. Only doubt is range, the ghat climb will eat battery way faster than flat city riding. Saw on an EV blog that Ather Grid has chargers along the Pune Panshet corridor but nothing closer to Sinhagad itself, so no backup if I run low. Anyone here done this climb on a 450X, how much percentage did the climb actually take, and is the tar road fine for a scooter right till the top or does it get narrow near the end?