You're currently doing a Stanavar only cycle? The standard beginner cycle would be to do 500mg of Test only, assess your tolerance and sensitivity to estrogen, then subsequent cycles do 500mg or 250mg of Test, then throw in ONE extra compound at a reasonable dose and again assess and continue. In your case, I would suggest as you finish up the Stanavar and go into PCT, lower the calories and drop your body fat down to 8% or lower before starting the injectable cycle. Steroids work best when you start a cycle off a lean base, so don't worry if you lose some muscle because muscle memory plus the Test will help you get back up in weight while staying lean.