Those message can be aready skipped by setting `core_log` global parameter.
* https://www.kamailio.org/wiki/cookbooks/5.3.x/core#corelog
No need to force them to a specific log level.
As for topos, I pushed a patch to catch http replies. Try with:
* https://github.com/kamailio/kamailio/commit/fad795648f8cbf12cc099dea18092ff7...