Hey langgman, I think what your doing is fine, I’m sure most guys would like bigger balls, and it does seem a bit odd of all the negative feedback your getting, considering that just about everyone here does what most people would consider weird. But as long as you have done the research it should be fine.
One thing I read on another forums is they can damage your testicles, by scratching them, but I don’t remember the circumstances of that case, so they may not have been smoothed enough. I’m sure your doctor knows what he’s doing though.
Can’t wait to see photos