I made this and currently drinking it :) well, not right now due to work lol. It gets better over the first 4 weeks, but definitely drinkable straight away.
Once done, rack it and try some. I added sugar at the start and followed the instructions perfectly, but it seamed to be quite thin and tasted slightly watery, still nice though.
I then added 500g more sugar at the end and bottled. within a few days it begun to thicken slightly, like the genuine stuff and tasted very sweet :) even gave it that little warm/burning alcohol feel at the end.
Don't think I would do this kit again as it is very faffy. took 3 weeks from start to finish, and had to be adding stuff like every few days and stirring it constantly.