Planning a 11-13 nights road trip from Delhi starting June 1, 2018 (with wife, 2 kids – 10 yrs and 4 yrs) in Toyota Innova (automatic, 2.8L diesel, Sep-2018 model). This is the most ambitious family trip we are planning in terms of terrains, duration etc., though we are regular with short 2-5 night self-drive trips to the hills in Himachal, Uttarakhand. We also did a 10-day vacation in North Sikkim in 2017 (not self-drive one, though
). My family is healthy and physically active with 6-day 1hr+ fitness regime (in general), without any known medical conditions.
Since June-18 trip (starting June 1) is hurriedly-planned , would need quick recommendations from travel aficionados in this forum on the following:

Since June-18 trip (starting June 1) is hurriedly-planned , would need quick recommendations from travel aficionados in this forum on the following:
- Location: Ladakh OR Spiti Valley OR Arunachal Pradesh OR Assam / Meghalaya OR any other location in North East (Ladakh / Spiti is on bucket list for several years now
)
- Itinerary for your suggested options (11-13 nights)
- Route guides / maps for suggested options
- Road / weather conditions / fuel availability
- Permit requirements (lead-time, documentation etc.)
- Car (Innova) preparations – spares, things to stock
- Stay options (tents / home-stays / hotels / resorts along with contact details, if possible) – we prefer tents / home-stays
- Food options (being an Indian foodie, this is a must in any road trip )
- Ready-to-eat food stock (for kids)
- Medical kit (kids / adults)
- Oxygen cylinder / Oximeter requirement (from Delhi or rent from locals)
- Clothing / other gears (like sunglasses, sunscreen etc.)
- Anything else, you may suggest to plan for this trip.