I wouldn't run winny only. I've never run it alone personally, but I know over the years several guys who have (both locally and on the boards), and not only we're they disappointed, but they suffered through some really sore joints that made their workouts less intense - one guy suffered from horrible knee issues, so his leg workouts sucked. Winny is a great "ancillary" that serves to applify other gear, but doesn't do much on it's own.
I would say if your goal is to maintain weight and drop a % in bf during the 6 weeks on a restricted diet, you might have success (along with painful joints) and you will look hard and lean (but that will go away when you cycle off so it's only going to last a bit), but if you are looking to gain lean mass, there are much better choices.
I would throw 250mg of test a week into it - you'll be less dry, and the winny will work even better, freeing up the test. I'd run 250mg/week test for 8 weeks with winny @ 40mg the last 6 to 8 weeks.