In my opinion, look in the Lakeland / Tampa. We moved from Jersey about a year and a half ago and I think cities like Lakeland and Tampa will make it was easier for you to transition that the Orlando area. If not, Winter Garden does have that town feel kind of, but you'd have to go further east on I-4 to get it your stereotypical northern downtown. I cannot stress more that Florida is in no way going to be like living in Pa.
For the most part outside of theme parks, tourist attractions, and city walk (which is not really a city walk in term of a northern city) there is not much but orange groves and cow swamps. The Orlando area also has a high number of people living under the poverty level due to the high amount of low wage hourly jobs (if you're not in the Disney area, rich neighborhood or a downtown you will notice a lot of homeless everywhere). Also, most of the major corps in Central Florida are in Tampa and this can be seen in the area infrastructure and the way the city develops (entertainment is king in Orlando, but everyone else is elsewhere). As a product of this, more of the high paying jobs are towards the coasts of the state and not the middle. It's also my opinion that Orlando never gives you that city feel the way Jacksonville does and Tampa is becoming. But the big one is, once you're sick of Disney every weekend (which I promise you will happen every now and then) what else is there to do?
What everyone else says is pretty legit. The income tax here is phenomenal and you'll notice it in your first tax return. If you buy a house they are also about 100 - 200K cheaper than a house in PA (I'm from Jersey so I'd know). The education system sucks and changes constantly...just because you move to a neighborhood with a good high school, restructuring might cause that school to suck a year later). The drivers suck from Nov. to May, or earlier if the weather in Canada gets nice earlier.
Listen to others about the weather. Central Florida isn't always hot, it does get cold in the winter, but when it's hot, my god it's hot. If you want to know what I mean go to Magic Kingdom in the middle of August, the sun will hate you just as equally. But if you can get through July and August man is it beautiful weather, and a beautiful state. If you end up moving here then great choice! Whatever you decide good luck!