Something like Dermacrine and/or Androhard would actually allow you to run an "oral" cycle a lot longer (since you can get dermacrine in a TD) and still have solid steady gains over time.
There are still some oral and transdermal PH's out that can be ran for longer periods of time without the worries of liver damage.... just steer clear of the methyls. sudden weight gain will raise questions, gains will be hard to hold onto without a solid SERM based PCT(which may be hard to have on base as well) and they cant be ran for longer periods of time since they are harsh on the liver.
there isnt anything oral or TD that I would run longer then 8 weeks though... after that your gonna effect cholesterol and recovery too much to be beneficial.