The biggest strength of Kafka in my opinion is consumer groups.I have been using it since 2016 in at least 3 projects and it never failed, not that big workloads though (~100 messages/sec max). However it is a bit difficult to monitor and manage using only the out of the box applications.

I would take a hard look at Kinesis/Pubsub for these data volumes; should cost in the tens of dollars monthly.