Sam,
I would recommend since you are shopping that you sign up for CarFax as you may have multiple requests.
ARB Front Bumper - $740
Winch - $600-$1200 depending on which brand and load you pick.
Tires, You can get 5 tires from $650-$1000 depending on which size, brand and style for a 33" tire.
Sliders $750-$900 for good quality sliders from hanna or Slee
Lift - $600-$950 for a lift depending on if you install it yourself or have it done.
Rear Bumper - $800- $1800 depending on quality, Brand and if you want a tire carrier.
Gears I hear are about $1000, parts and labor. The consensus here is to go 4.88's.
Lockers, depends on what yo want to do. You need to have a selectable locker in the front, you could run and autolocker in the rear which is much cheaper. I would ballpark $3000 for front and rears till you decide. If you really want lockers, it will be cheaper for you to wait for one that has the stock lockers. Don't be in a hurry.
edit : Jim said $3k and his locker estimate is surely better as I have never priced them