This sounds like a good plan at a reasonable price .. 
I will be seriously considering having my upper arms taken care of when I'm down to where I want to be .. 
Did you ever think about going abroad to have this done ?  I've read people who have had there surgery done in Poland for a fraction of the price of here .. Very tempting when in a limited budget ..
As Fee said I think it's just a gut reaction when people learn just how big we were .. Your not a freak ..
Have you ever come across someone who has , say , short hair , and they tell they used to have hair down their waist .. The first thing is you cannot picture them like that and I would ask for a pic .. 
He's seeing you as this tiny person and cannot comprehend you being that big , that's all .
. Your far from a freak my love .. Mind you , there nothing wrong with being  a little freaky ! 
Xxxxx