I agree with Sotto, this is about your daughter as well as you. I'm sure he'd want to see her and you financially okay and you set up in a city where you'll be able to find suitable work.
I understand how anxious moving to a different city when you're unsure about your health and will have no support network for your daughter. That would be a worry. You'll need to find a support network there as soon as possible...if possible. I wish I could offer more concrete advice, only to say...if you're in a job where you're getting better pay, you'll be able to afford better childcare if you do fall ill. But also, if the financial aspects of your life were taken care of, your stress levels will reduce, and hopefully that will have a knock on effect with your health.
I hope your H will be cooperative in regards to helping you relocate. Good luck x
Me 50 H 48 S 23 S 21 D 19 Together 31 years Married 25 years Separated April 2009 Reconciled 2010 Separated September 2017