For whitetails south central is a good place to hunt along the Arkansas River unit 13, 15, 12, 14. I run Kansas Racks & Quacks and we have land in 15, 13, 12 you can check out our website at http://www.huntingks.com.
Will you be hunting public ground, private, or planning on using an outfitter?
I've only hunted private land in NE KS, and have had pretty good luck around here. Have also seen some Monsters. Units 10, 9, and 19.
When placing a trail camera don't just look for a well used trail. What you want to do is look for a freshly used trail off by itself that goes from a north facing ridge, thick forest, brushy knob or some other similar bedding area to a food source. Don't forget water sources. Especially in the summer months the deer need water so look for a good trail going down too a creek surrounded by thick cover and place the camera 100 yards up from the water source.
Scent control is very important...