It's a really difficult transition.
We started DS at a similar age first time round and it was a bit of a disaster actually. Luckily we had the flexibility to pull him out. We started again at a different place at 2 and he loves it. You never know how it's going to go till you do it - some kids that age might be fine, others like my DS just aren't ready. I would recommend looking into FDC and any other options you may have, just so you have something up your sleeve just in case. And before you start, go with her to the centre for a few hours at a time at least a few times so you can get a feel for the place and the carers and she can explore and get to know the place with her mummy near by.

Anyway, you have lots of time so while forward planning is always good, try to relax and just enjoy this time you have together. It'll go so fast as it is.

As an aside, we did baby signing with DS and he could communicate quite well with us at that age even though he couldn't talk. Makes everything much easier.