Help for pumping

Hey Pumpers, I am considering to get a good vacuum pump. I will be quite happy with a 9X6 dick, and I need an extra inch or so and some girth as well to reach this goal. Some of you are saying that permanent gains are possible with pumping when combined with other manual exercises. So it seems to me a good idea to do downward stretching and some 10 minute-a day pumping session to reach my goal. Do you really believe that I can fasten my growth with a good pump. Does it provide satisfactory girth increase, cause I don’t like complicated hard-to-do exercises for girth and how does it give extra length, by stretching the ligs or by enlarging the outer penis? Also, what size should I buy? (10” tube seems good to me). Thanks…