It's all perfectly good stuff but it's no cheaper than buying it all separately.
At 6k you won't need to change your plugs, just check them and maybe give them a clean. You also shouldn't need to change the air filter, again a good clean will sort that. So I'd personally just buy some oil.
If you check around on eBay you can usually pick up 4 litres of silkolene super 4 and an oil filter for around £30 delivered from the like of M&P or similar cheap bike stores.
So save yaself £60 then use it for fuel 👍😉