Yep , non normal procedures first then tidy up(clean up). The 400 foot limit is to assure second stage climb performance and continuing that to 1000 is conservative but you are still meeting the second stage climb performance of 2.4%.You then want to close it down or whatever the non normal dictates. We don't do anything below 400 and then the first thing the pilot flying does is to ask the support to "identify the problem". You may like to do this at 400 feet and then prethink your non normal checklist to then commence at 1000.