help me choose the components of a smart system

[Almhlws]

I have now home  i want used  will use home assistant

 i want used momentary wall switch + 4 IP Camera + sound systems 4 zoom + alexa voice control 
 
and  i want connect  all relay swatch by ethernet to the server between the floor


71  lighting circuits on / off
12 dimmer lighting circuits
6 air conditioner circuits with control keys
3 garage control circuit
4 motor
 6Curtain motor
4  move sensor
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 First floor
32  lighting circuits on / off
6 dimmer lighting circuits
5 air conditioner circuits with control keys
 6 Curtain motor
3  move sensor
 
 _________________________________________
 
Second floor
20 lighting circuits on / off
4 dimmer lighting circuit
2 heater circuit with control switches
3 air conditioner circuit with control switches
2 motor


thank you