Like Tim, I would suggest that my ratio of shots taken to those used is probably around 1% at most. Therefore I really do not want to spend time processing images that I do not use. The first thing is to go through LR and select the first cut from the rest. Then wait a day or so before doing round 2. Then some quick work on those left in LR before picking (say) the top ten. They can then be imported into PS. Take each image and decide what you do not like about it or want to improve. Write it down. Then attempt to correct it.