So how long would be ideal?
When in doubt use the advanced search feature in the forum. For example search 'Anavar' and then put in a moderator such as 'Stonecoldnto' into the user field and hit the 'search' button.
You will get the info you are looking for from a reliable and knowledgable source. Just make sure you get you info or advice from someone knowledgeable...... you may not always get the answer you want but you are going to get the answers that will keep you out of harms way and help you in the long run.
andru, can we ask what your goal for this cycle is? because depending on that, Anavar (var) might not be the best route and it might save you some money if we know what you are going for.