Base in Leh for all 5 days and use it as an acclimatization hub. Do one hard adventure each morning, keep one family-friendly cultural stop each afternoon, and finish with golden-hour views in the evening. This works because Ladakh punishes overpacked itineraries at 11,500+ feet; the right move is to stay in Leh, skip long lake camps, and spend your time on short, high-reward drives into Sham Valley and the Indus side roads.