No, I think HCG and HMG are the right tools from what I've read. There is a fertility article in the media articles, is suggest you read it if you haven't already.
Most guys that tried for a baby went off test. I'd do the same.
I recommend the HGH because it improved my sperm and skyrocketed my morphology.
And contact a Kinderwunschklinik. Don't you have that in Austria? I assume you have health insurance. The huge benefit of a Kinderwunschklinik is that as soon as your sperm will improve to a certain level (but still below who standard) they will do an IUI. You nut in a cup, they dump the dead sperm and insert it pain free in 1 minute in your wife. If shes not ovulating, then she'll get a hcg shot. Also she'll get progesterone.
AND you'll get a free sperm analysis each time you do it.