First of all you must have all the essential safety gears i.e a good quality DOT approved helmet, elbow/knee guards, a good quality waterproof trouser with jacket, wind breaker jacket and a pair of waterproof rugged high ankle shoes.
If you want to save some bucks then buy good quality camp, sleeping mattress, sleeping bag, inflatable pillow and a polar fleece light weight blanket.
Side boxes to carry fuel, tool kit, puncture kit and other essential accessories i.e gear, brake levers, head/tail light bulbs, throttle/clutch cable, tubes. Do carry spare front/rear tyres.
Trunk box to carry your utensils, stove, food and tea items.
A good quality tank bag to carry your important gears like DSLR, Compact, handycams, USBs, Cell Phones, Extra batteries, power banks and you important documents and maps.
Last but not least spent Rs. 1000/ on first aid kit, easily available at all medical and super stores.
A loaded bike picture attached for a reference: