I'd say a winstrol only cycle is a bad idea. Its very hepatotoxic (one of THE most hepatotoxic steroids there is on a mg for mg basis) it will mess up your lipid profile badly, and ont op of that you'll see very little in the way of muscle gains from a winny only cycle.
People tend to think this drug "cuts" you up and makes you strong as an ox at the same time, but it doesn't. Diet makes you leaner. Personally unless your a pre-contest bodybuilder I don't see the point in using winny.
I actually have a friend who buys a sh!tload of the stuff everytime he sends his application off for a show. It motivates him to keep his diet and training up, because if he doesn't use all the winny pre-contest he'll never use it, and if he doesn't use it he's wasted alot of money!
I'd go with some H-drol or Epistane if its your first run.