How to plan 2 days trip: Shangri La - TGL(hike) - Lijiang?

We are thinking about the following plan (in October):
1. Arrive to Shangri-La by evening flight from Chengdu
2. Spend a night in Shangri-La. Early morning visit to Songzanlin Monastery.
3. Car transfer to the starting point of the TLG hike.
4. Hike to some Guest house after 28 bends. Night at the guesthouse.
5. Continue hike from early morning for the whole day. Car transfer to LJ.
Is our plan reasonable? If so what TGL Guesthouse is most convenient for our plan to stay for a night?