I will place my route data or planning to just give you a idea infact a clear idea how to go about it.
So i landed at around 8 am in the morning by the air india flight. It was 21st may and people told me it will be a moderate weather. I started my journey from banglore then hault at delhi. Immediately after landing got a guest house for 3 each paying 500 rupee a day. It was a well furnished house and we were shocked with the price he took from us. He took care of the hospitality, provided with morning chai every day and what not. Being from mountains i never thought leh to be so cold that too in end may.
Hired 500cc bullets and went on to see the leh city. We ended up the day with leh palace and as it was necessary to get acclematization in the city. People told us that atleast 3 days were required for acclematizatio but we just thought of 1. But I would definitely suggest for atleast 2 days for it.