Fuel mixture is air vs fuel ratio that is being set from the carburator. You don't need to worry about it. If your bike is giving you good power along with good fuel average. If your plug tip colour is brown then you are fine.
Liqui Moli is one of the best oil. If you are satisfied with its performance you should stick to it.
Chinese HID is a desaster. It can and will ruin your bike wiring. We have a major incident in our last trip where 3 lac worth derbi got failed due to cheap chinese so called 100 watt HID. secondly HID without projector is unethical. Your best bet would be YBR G head light. install that and get a proper focused light.
If you want to change rear tyre go for RALCO 100/90. Its a very good tyre second option is Panther Trakker
Ask you nearby puncture wala. He will guide you about tube replacing kit. And get some tranning from him as well otherwise you'll riune your tube while opening it.
mannual air pump is good. just try it a couple of time at home.
i can provide you route plan from Lahore onwards. Before that route is the same everyone knows that