I wouldn't take test as a way to maintain a balanced level of hormone and therefore hopefully avoid acne in the future. It sounds like your levels have naturally stablized, which is common, given your age. If you decide to run a cycle, theres a good chance that you'll be prone to getting acne. If it becomes a problem, I would strongly consider using accutane. This medication is truely a "cure" for acne and although its an intense medication, in the long run, would be a lot better than running test for the rest of your life at 25 yrs old, only to avoid acne.