do the setting yourself or farm it out, what you will end up with is a set of 'proofs'. These are print-outs of the set, paginated pages (Pagination is particularly important and you will need to read about this carefully if you set the book yourself.) Once you have the proofs, you can check them very carefully, and also get someone else to check them. Make a note of any mistakes and either put these right yourself or get your setter to do it. Mistakes will still get through because they always do. I bear in mind the religion of Islam, in which architects and builders always made a deliberate mistake when creating one of their wonderful masterpieces. They did so because only 'God' is perfect!