Its a tough call !
All I can say is "What a waste of your life, if you do!"
Sorry to be so to the point but it is pretty much something I tried to do, but it is so hard and depressing, do you really want to waste you life like this, you will be closing so many doors of opportunity, its not that easy to just pretend with the witnesses, think about it, you will have to study in your own personal time, do you know how boring that is when you are not interested ! go to the meetings when you want to go out with friends, you will have to abandon friends that are not JW.
Believe me, you slip up, you are for it with them ! I dont know how anyone can live a life pretending like this, it is like a death sentance.
Nothing against your family here, they are obviously sucked in by the witnesses, but like my other half said "were they really your friends if they have now abandoned you !" it would be interesting if your family do actually abandon you completely, and it will also be really sad if they let the religion get the better of them in that way. I learnt the hard way on this one tried and failed, I was very miserable and when I left I had to make new friends, I did it and I am happy now.
Its up to you at the end of the day, but personally I wouldnt do it again !
All the best in whatever you do !
X