That much things we have to do and only 2 inchs gaining? 
I have my arms around 17inchs with that BF. But, i wont use gear to make arms 19inchs only defenitely.
shows how much you know..."only 2 inchs"

But WHAT 2 inchs? those "2 inchs" are the final two where your body FIGHTS not to have because you are now heading to muscular limits.
you can put your "ONLY 2 inchs" comment if we are talking going from 15 inch to 17 inch.