My heart goes out to you with such a huge discision to make.. No one can make such a descision but you.. And I am sure that in your heart you will make the right one whatever the outcome is..
If I had to go thru such a desicive surgery and counting my options and to look down the road into my future.. I would go thru with the surgery and have the Dr do the best he can.. It is always possible that everything will go as planned and if it doesn't and he goes higher it still may help..
I will keep you in my prayers that this will work for you..
Best of luck and keep us posted..
((Gental Hugs))
Dawn