Can I have a single parent opinion please?

Hi
I've been a single mum for around 3 years. I live with my DMum and my DS is 9.

I have been given my redundancy notice where I work, but have been given an opportunity to move around 80 miles (1.5 hours away) to another office.
I'm very tempted to move, I cannot afford to live in the town I am in at the moment on my own with DS. It's a lot cheaper up where I would move to.

But because I live with mum I have been in a sort of perpetual teenager life where she doesn't let me parent DS exactly how I would want to, but also I have a built in babysitter.

DS would be moving into year 6 in September & would need to move schools. I don't even know how to do this!

Would you go? I have so much going on in my head at the moment.
In my town there are jobs, but not necessarily high enough wage, I live by two cities where there are more opportunities. But that would mean even more time away from DS.

DSs dad seems alright with it, I'd come back every weekend so he could see him (his dad is a lazy bugger so wouldn't make the effort to see his own son if I didn't facilitate it)

Thank you so much if you've managed to read through all this. I just need input from people that aren't my mum really!