We're talking about thousands of dollars to repair the items listed. Take into account that with the condition of the engine oil, clutch/brake fluids, and coolant, I would suggest that the vehicle has been poorly serviced and I wouldn't trust it as far as I could spit. I would even venture to guess that the 100,000 major service has not been completed.
There's also quite a few defectable issues so you'll be driving around with a yellow sticker time bomb.
This link (http://www.carsales.com.au/used-cars/NISSA...n=All%20Regions) shows that the market price for them is about $13,000.00.
I reckon that the owner won't drop his/her price because the next person who comes along will take it at the asking price if they are not aware of all the issues.
Seriously, I would wait for the next one.