Since ANAVAR is a mild AAS is can be ran longer than most orals,,even 10-12 weeks
and for most men 40-60mg per day works nicely.
You most definitely want to do a solid PCT following the cycle.
Everybody is different, but as for me, it stopped working after mere 5 weeks, and raising the dose from 60 mg/day up to 80 mg/day didn't help at all. It was simply no use to run it longer. Curiously, after I finished the cycle (after 8 weeks), I again experienced a mild strength increase during the 9th week (followed by a gradual downfall, however). This phenomena already occured twice in me and I think it has something to do with the chronical "overload" of androgen receptors during the cycle. Hence I think I should rather lower the dosage around the 5th week.