If it helps, here's a different perspective. I don't do anything to my armhair. Once I realized there were some GGs with hairier looking arms than me, I just gave up worrying about it. I did used to do the epilator method and shaving, but I really didn't need to. In fact, I had some GGs notice they were hairless at the time, but when I let it grow out, nobody notices anything. I don't know how the hair on your arm looks, but if it looks like a typical male's hair, then I would use one of the above methods.
Melissa