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This is the most optimal way if you need to use a queue for any reason in Make. I would have suggested the same method too.
To split data into chunks, see A Better Solution for "How to group bundles in X amount of bundles" (Chunking Arrays). This can be used to send data to the webhook queue, so that you do not need to perform another “search” in the second scenario.
Hope this helps! Let me know if there are any further questions or issues. P.S.: investing some effort into the tutorials in the Make Academy will save you lots of time and frustration using Make!