Rifle with a bipod, knee pads, gloves , a day pack. and good binos. Make sure you check the weather forecast before you come out for clothing options.
43 is a good area and very green and wet right now.
A good sized cooler will hold more than one boned out antelope.
Good fishing close by if you're so inclined. You'll also be right near the north end of the Snowy Range, on the south side of the area, for a nice scenic drive into the mountains if you need a break from hunting. The east side puts you close to Highway 34 and drive through Sybille Canyon to look at some big bulls at the G&F research station and maybe some wild bighorn sheep., good fishing in Sybille Creek at the public sections.
For fuel and limited supplies you have Medicine Bow to the north, Rock River on east side, a truck stop at Hunt Rd exit on I-80 and Laramie. McFadden may have some supplies but I do not know.