10 weeks is too long for an Anavar cycle. 8 weeks should be considered max. Anavar gets a rep for being easy on the liver, but it is still a 17aa, meaning it's hepatoxic. You need to run liver support while on your cycle (Liv52, milk thistle, etc.) and you need to do at least three weeks of PCT with Clomid or Nolva.

Most guys do not report ED with Anavar. Low libido sometimes, but that is easily counteracted with Tribulus and/or Avena Sativa (both all natural). I wouldn't consider test just for this purpose.

Test is still the king of steroids though. Sometimes the first is still the best, and as noted running test with Anavar will produce even better results, especially if size is one of your goals.