Rich, you mention large honeysuckle! Are these bush honeysuckle? If so they are a worthy adversary. Tough wood! The husky you have should do fine for the larger trees. Depending on the trees you will have to be concerned the re-sprouting of some species like honey locust, bush honeysuckle. I used Tordon stump killer and it is very effective. for honeysuckle vines you can use roundup but caution here because you will kill all of the grasses as well. you will have erosion issues then. Crossbow will kill the honeysuckle vines as well and not kill the grass, but it cost more.
I have a Stihl 044 and I would use it for the large stuff. a smaller tree trimming saw would be good for the 3" stuff.
I think the tracked skid-steer with a bush hog is a good way to go. maybe you can buy an outfit and then sell it when your done. You could spot spray the area in small tracks immediately as you are done. to kill the stuff you need to work with fresh cuts. Best of luck.