Georgia is the largest state in square miles, east of the Mississippi. You got a lot of territory to cover. Lots of historical sites, lots of nature sites. Will still be cool to cold up in the mountains in April, do the north part of the state last.
Not sure what your interests are, so its hard to make recommendation.
Okefenokee National Wildlife Refuge and Stephen C Foster State Park inside the refuge should be on the list.
Kolomoki Mounds State Park is also a good visit.
If traveling along I-75 north of Macon, High Falls State Park is just a couple of miles off the exit and worth an afternoon and has a good campground to spend the night. Just about 7 miles away, an easy drive on a couple of county roads is Indian Springs State Park which has some unique history
(I need to visit this stuff myself, haven't been to most of it since I was a kid.
Next to Columbus is the Ft. Benning Military Reservation and on it is the National Infantry Museum. It is big, nice and very well done, and worth a visit. Interesting fact, Ft. Benning, like Ft. Hood in Texas, are named after Confederate Generals.
Roosevelt's Little White House Historic Site is just down the road from me and I was last there 4 or 5 years ago, well worth a couple or three hours. Very close to F.D. Roosevelt State Park which has nice campgrounds, very scenic area.
Cloudland Canyon State Park in NW Georgia is one of the most scenic of the parks.
Not far away is Chickamauga & Chattanooga National Military Park if you are a history buff. Site of a very major battle in the War Between the States, and led up to the Atlanta Campaign.
Way too much to mention, visit the official State Parks and Historical Sties web site and get more info.
If you plan to be in State parks any at all, go ahead and get an annual pass, a hang tag for your mirror. The Friends site is a little more money, but a fund raiser for the cause. I got one that is good thru May, thru the Friends, when I made a donation to Georgia Public Radio during a fundraiser last spring.
https://friendsofgastateparks.org/ci...t?reset=1&id=1
http://gastateparks.org/ParkPass
Charles