Definitely a lot to way up. Support is everything I say that because I have very little and as they grow it could get harder.
I am south estern Melbourne so only limited to my knowledge around here. Best chance (Glen Waverly) has a special kindergarten program, then there is On track Learning Project held in East Malvern also. Both fantastic.
There are afew ABA therapy locations. We looked at Happy Oak in malvern. They seemed lovely but we couldn't afford the fees or time requires for it.
On this side of the city there a lot of places to access help. Many special needs schools, lots of therapists, and a lovely area.
All the best with the move