Tiger Leaping Gorge Itinerary

I plan to hike to Halfway House and stay overnight here on Day 1. On Day 2, hike to Tina's Guest House and go to the Middle Gorge and then Walnut Garden. On Day 3, hike to the Lower gorge. Where is the best place to stay on this day? How do I go to the lower gorge? I plan to leave for White water terrace and then to Shangri la on Day 4. Where can I arrange for transport to go to White water terrace and to Shangrila?