I wanted to provide a complete update on Dorian
so you could hit the ground running in the morning.
Unfortunately, the storm is strengthening this evening. Pressure has dropped to 973 mb (it was 986 at 5pm) and it appears winds are now up to 95 mph (up from 85 mph at 5pm).
At 9pm, it is looking more organized on satellite than it did earlier in the day.
So, the Hurricane Center's forecast of a Cat 4 hurricane striking Florida looks like it will be correct. As to where, here is their latest forecast. Here is their 5pm (latest) forecast (white).
I believe it is entirely possible that evacuation orders could be issued Friday.
You may want to prepare a "go kit" and make a hotel reservation tonight. I would recommend something north of Valdosta or Montgomery as a place to stay. If you choose to go west, you should at least go to Mississippi.
Finally, as to the online nonsense that there is some big increase in major hurricanes striking Florida due to global warming: hurricanes are far less frequent in recent decades than they used to be. Please see graphic below.