I basically have nearly everything within home assistant showing up in HomeKit and never had issues so far. Home assistant is the player in the background running all the automations while exposing the most important devices to HomeKit (esp. for voice commands with Siri) Only downside using HomeKit as the „UI“: Notifications are very limited.

Smaller steps. One at a time. Test.

I started off with HA, integrating all my devices i had at once, totally enthusiastic as I was. There were times where I installed several automations and integrations within just a few minutes, not giving them time to work for them selves, especially not in a „productive“ environment with wife, kids, neighbours, etc. all involved in the system.

Lots of automations broke or did not work as expected and I saw my self confronted fixing so many building sites at once.

I am through the roughest part. But should I start from scratch any time I will most surely start I’d small, test, iterate and move on.