I'm in a similar position, after a traumatic and complicated first labour, any future pregnancies will be 'high risk'
I personally am fighting against it, and planning to birth naturally, by either going to hospital very late (too late for epidural/c-sec) or travelling 5 hrs to the city to birth up there (as they will let me go natural again)
I hope you get the birth you want, and I agree with staying active during labour.
I was also told that my general level of fitness (i was at the gym until the day I was put on bedrest) prevented more problems, so ill be trying to watch my health next time too.
good luck!