i'm not sure i can answer all of your questions but i can comment on the pain side of things..
i was induced with DD1 with no signs of cervix being ready at all, no pre-labour etc. had to have gels to prepare cervix and dialte enough to break waters. really bad pain.

DD2 was induced again but cervix was open 3cm already, had a bloody show that morning and all in all was pretty much ready to go. pain built up and i handled it MUCH better.

so i wouldnt be induced if after an internal you show no signs of being ready yet.