I've recently brewed the very same kit! (Bottles are currently conditioning)
It's all in US Gal, and all the temps are degsF, which frankly I found a pain in the hole!
A few tips:
1. Check the yeast is in date, and it might be worth checking on here if it's enough - I'm not sure if 6g dry yeast is enough for ~22L
2. Get yourself a thermometer and a hydrometer & trial jar
3. The magic syphon thing in my kit was rubbish - for bottling I ended up syphoning the old fashioned way!
4. Manage your expectations - the couple of bottles I tried were ok but only ok, rather sickly sweet. Maybe you'll have better luck than me - worst case, you've got all the gear you need to give all grain a go for brew #2 ;-)