Network Advice - HA and VLAN

I would like to set up my network using VLANs to separate the different types of traffic to improve security. I am not sure what the best way to set up the network is. Ideally, i would like everything to work as before (discovery, etc) but i understand that i may loose some convince for increased security and stability of the network.
I would your appreciate advice…
the sketch below is what i was planning…