Don't go ahead with it until you've had a heart to heart with your doctor. It might be the best thing, but be sure! Let him know where you're coming from and why you'd like to wait longer, and see if he can convince you to change your mind. If you feel like he's being unreasonable about going early then you can refuse to have it done. You are not under arrest, you have the last say about what's best for your body, even if its wrong. But obviously the safety of you and your baby is your top concern and if its bad to wait, then you'd go ahead with it.
I had gestational diabetes and everyone freaked out about wanting to deliver me early. I wanted a natural child birth, so the idea of an induction or c-section was scary! I was (in my doctor husband's words) the most compliant diabetic he'd ever seen, because I wanted my baby to not get so huge we'd have to deliver early or do a c-section. Ultrastounds showed an average sized baby, but they still wanted to induce me. In fact the morning of my visit to schedule the induction was when my water broke (2 weeks early) and she came on her own, and I was able to have a natural child birth. And my baby was 6lb 11oz. So much for everyone's fears right? The frustrating thing was that the Maternal Fetal Medicine doc was giving me the opposite advise, since the baby was small he didn't see the need for an induction and told me to just protest. I'm thankful that it didn't get to that point, but I understand a little of what you're going through. I was gearing up in my mind about the conversation I wanted to have with the doctors about when and how the induction would take place, and I was bringing my hubby along for support.
Best wishes! Having your baby is a blessing, and 35 weeks is early, but not dangerously early. If that's the best thing then don't freak out about it and go with the flow. If not, stand up for yourself!