Renovating after separation

Hey Everyone,

I was in a toxic relationship for 10 years and I was on the receiving end of verbal and mental abuse. I've since separated from my children father 6 months ago. We are currently living residentual and had originally moved here 7 years ago for my exs job and I was then isolated from friends and family. We currently have no written agreement or court orders in place but have a verbal agreement of 50/50 custody which is about the only thing we agree on. I just want to get some advice or find out what I'm allowed to do regarding relocating myself and my children back to Perth. I still want him to have 50/50 custody, but am I being unreasonable asking him to go fifo which he had the ability to do. Financially, logistically and emotionally it's hard for me to stay here. I also don't get child support and my ex kept everything when we split. Please Help.