I have worked a little on the itinerary of my Dream Trail. Here's how it goes:
Day 1: Namchi, Sikkim, India
We start in Darjeeling the previous day, before driving over to Namchi where we will be based for today. Today is the first wildlife highlight of the trip: Maenam Wildlife sanctuary. There is a great diversity of bird life, and some species unique to the region like the Darjeeling Pied Woodpecker and the Blue-fronted redstart can be seen. Rare medicinal herbs from the local area can also be found there! Views from the top of Maenam Hill are also stunning, and you might spot a Red Panda!
Day 2: Ravangla, Sikkim, India
We have a short birding trip in the morning, after which we head over to our next stop - Ravangla. There, we continue hiking and trekking in the local region, and visit monasteries and local Lepcha villages. The hot springs are a highlight too!
Day 3: Lachen, Sikkim, India
We transfer to Lachen starting in the morning, and aim to reach by lunchtime. This is one of the northernmost places we visit on the trip, and the first time we get to visit Khangchendzonga National Park - try to spot some of the larger animals like the serow, Himalayan tahr, and maybe even a snow leopard, red panda, or bear! Driving over the the Gurudongmar lake from Lachen also has some great views.
Day 4: Lachen, Sikkim, India
We spend the morning in Lachen, and explore the national park further. We then head to Yumthang, the valley of flowers in the afternoon, which is a two hour drive.
Day 5: Yumthang, Sikkim, India
We spend the day in the stunning valley of flowers and the rhododendron sanctuary, appreciating the stunning scenery.
Day 6: Ravangla, Sikkim, India
We return to Ravangla today, and spend the day relaxing, and maybe visiting some more of the cultural and historical landmarks of the area. In the evening, we transfer to Yuksom.
Day 7: Yuksom, Sikkim, India
We are now on the western side of Khangchengdzonga National Park, and can go on a number of hiking trails - this might be a great opportunity to spend some time camping in the forest. The trek to Dzongri hill is a great opportunity available here - this would be 8 hours of trekking today, going to Tsokha.
Day 8: Tshoka, Sikkim, India
Tshoka to Dzongri - we would continue the hike, and this may warrant an extra day here to account for altitude acclimatization (details to be confirmed).
Day 9: Dzongri, Sikkim, India
We get to Dzongri peak today, which gives some stunning views of Kanchenjunga, and then return to Tshoka.
Day 10: Yuksom, Sikkim, India
We return to Yuksom today, and then drive to Darjeeling - the culmination of a great passion trail in the Himalayas!