thanks for the compliments! Donations are always appreciated, but you are only just beginning your trip - you will need this website much more often still before you get home
Before we get to the weather, consider how you will get back from India. Through Tibet and China with a car will be very pricey by yourself. Driving in China is expensive because of the guide. Returning to Pakistan is difficult because it is hard to get a visa once you are in India (a transit visa should be in the cards, though). Shipping your car from India is another tricky and expensive idea.
Difficult question here since most of your trip is in cold countries (how would staying in Southern Europe be more expensive than staying in Scandinavia?) In any case, if you don't want to travel in cold climes in winter, you should avoid Scandinavia, Russia, the Caucasus, Central Asia and Eastern Turkey as much as possible between October and March.
Here is my idea.
1. Leave Scandinavia for another time. You live in Europe, it's really close.
2. Leaving in September, rush through the Balkans to Istanbul. Turkey - Iran - Pakistan - India for the winter.
3. Once spring comes around, turn to Central Asia via the Karakorum Highway. 4 stans + Russia, then return to NL at the end of October via Caucasus - Turkey - Balkans or via Baltic + Scandinavia.
Just my 2 cents.
For the Central Asia loop coming from China, I would recommend Qolma or Irkeshtam pass, then straight to Osh and into Uzbekistan (this will be the warmest early in the season). After Uzbekistan, return to Tajikistan, do the Pamir Highway Dushanbe - Khorog - Osh and then take your time for Kyrgyzstan. It should have warmed up by that time. Then Kazakhstan to Russia or the boat to Baku.
Enjoy the planning!