So where in PA are you planning to move to? Makes a big difference in what sort of local attitude towards guns you'll find.
If you move somewhere in the northeastern part of the state, along I-84 for example, it's very gun friendly. It's still largely rural and homes are spread out so people have room to live freely.
Somewhere along I-80 getting close to New Jersey is very built up and not as gun friendly, but still far better than NJ. You need to get about 25-30 miles away from the state line before things open up. You'd either be around the Blakeslee area off I-80 or Pocono and Tobyhanna of I-390.
Along the I-78 corridor it's even more built up and again, less gun friendly. You need to head north from the interstate, say along the PA-33 corridor to get out into the small towns in the country where life is gun friendly.
Then down near Philly where the Turnpike crosses into NJ it's about as worse as PA can get without getting into downtown Philly.
As far as any AWB being passed in PA, there's lots of talk being put out by a very few legislators, but the majority of the state and the elected officials do not support any such laws.
Good luck on the move. I think you'll enjoy PA, especially if you can get into the northeastern part of the state on a 5 to 10 acre homesite.