Why would you want to use winny that long? This stuff is like poison in my system. Personally I think test is the only aas that should be considered for year + durations, at least it is your predominant natural androgen and I think most of the others could really mess up your hormonal levels over a long duration. (test can too, but not nearly like winny or deca or tren), not to mention the liver stress that winny would be putting as it is metabolized.
Winny can 'shut you down' in a short period of time as well.