This itinerary looks to cover the areas popularly visited in the East India which are Darjeeling, Pelling, Gangtok and Kalimpong and in a most -likely time frame which around 8 days which allows a relaxed itinerary as well as a good mixture of sight-seeing options.
Day 1: Arrive in Morning at New Jalpaiguri / Bagdogra and proceed to Darjeeling (90 kms) - 3 hours. Proceed for local sightseeing in the afternoon. Ghoom Gompa (10 kms), Museum, Zoological Park, Botanical Gardens.
Day 2: Proceed to Tiger hill (View Point to be visited for Sunrise) in the morning. Visit local markets in the afternoon.
Day 3 Proceed to Pelling after breakfast - 118 kms - (4 hours). Enjoy Himalayas views from Pelling. Visit Peayangatse Monastery, Changay Waterfalls, Dentam Valley and Singshore Bridge in the afternoon.
Day 3 & Day 4 While in Pelling Visit Pemayangatse Monastery, Changay Waterfalls, Dentam Valley and Singshore Bridge in the afternoon. Full day Excursion Option from Pelling : Kecheoropalri Lake, Yuksom and Tashiding Monastery.
Day 5 Proceed to Gangtok (132 kms).
Day 5 & Day 6 While in Gangtok visit Tsangu Lake (full day Excursion), Rumtek Monastery, Nam Nang View Point, Botanical Garden, Handicraft & Handlooms Center, Flower Show (Seasonal) and Tibetan Market. Morning visit to Tashi View point, Ganesh Tok, Hanuman Tok.
Day 7 Proceed to Kalimpong (79 kms)