Flight till bagdogra right??
Day 1 arrive at Gangtok from Bagdogra and spent the evening in mg Marg. Also be try to get the permit for Lachung and Gurudongmar. Stay at Gangtok
Day 2 Gangtok sightseeing, the waterfalls, monastery and all. Avoid rushing as family are travelling. If the permits were not made on day 1, do on this day. Stay at Gangtok
Day 3 Travel to Lachung, Yumtang and zero point. Stay at Lachung
Day 4 Lachung to Lachen, Gurudongmar, and Thangu Valley. Back to Gangtok. Stay at Gangtok.
Day 5 - Zuluk, Silk route (optional), stay overnight.
Or
Rangpo, Namchi (char dham), pelling, Ravangla (Budhdha Park) and Yeksim Then stay at Pelling. I prefer this over silk route.
Day 6
Complete the pelling part from Day 5. Stay in Pelling.
Day 7
then return to bagdogra
I don't know abt your flight timings.
But if possible try to get these done.
If it looks more hectic, avoid darjeeling and complete the rest.
Happy time... ✌️❤️
Taxi consider 4k/day per vehicle.. consider 4 vehicles, so total 16k*7= 112k
Room 2k*4*6= 48k.
Food .5k*18*7= 63k.
Total including room, travel and food - avg 2.23L.
Vehicle and room bargain upon you
Hope I made myself useful.. ✌️❤️
Welcome to any doubts.
May mark this as solution, if it did.. ✌️❤️