I second the sentiment of many comments here. To use an analogy. Instead of trying to upgrade the engine in a model T to a modern block, start over. Get a new

I second the sentiment of many comments here. To use an analogy. Instead of trying to upgrade the engine in a model T to a modern block, start over. Get a new office, get a small team to redesign the workflow. Then test it live, handle the exact same workload as the existing office and fix problems until everything mostly works. Give first dibs on the permanent jobs to the folks from the old office. Hire for the rest and pray you met budget. If you did start over with the next office. If not, you'll be replaced shortly.