If it were me, I would contact the private lands biologist for the area/county you're in to see if they will help. They had a crew come out to my place and do a burn. I just had to have the firebreaks in place, and they told me how wide they should be. Then, I would consider only burning a portion of the 40 acres every year to vary the age of succession and connect those units together so you have different ages touching each other.
Edited post to add in contact info for your area
Southwest
Ricky Chastain
7004 Hwy 67 East
Perrytown, AR 71801
870-331-1297
Ricky.Chastain@agfc.ar.gov