1. Started around 7" and went to 8". I suppose 9" is a realistic goal. I started around 6" girth and went to 6.5" and don't really want to get bigger girth.
2. Dedicate myself to PE exercises again and use the Phallosan Forte extender I won.
3. Whatever floats your boat. When I see girth over 7" it makes me cringe. Length over 8.5" usually comes with poor erection quality but I don't see any reason to limit length gain if you can keep good, hard boners. I think around 12" would start to be too much as it would be hard to angle it in some positions.
Most people won't see any gains from PE. Some will see 1". Very few will see more than 1" but it has been done.
Some of the pumpers and injectors have seriously f***ed up the appearance of their penis. But like I said, whatever floats your boat.