The guys at Fortec are great! They have done work on my Jeep and were first rate. Their attitude is that if the product isn't also first rate, they won't install it or sell it. They have a catalog that has a lot of details on what they sell. All of these wheels are made elsewhere and then marketed by various companies.
You need to match the backspacing of your spare with the other rims unless you plan to replace all 5. Wheel locks are cheap insurance; they were among the first things I installed on mine. I searched on this forum about the 33's and they will fit well on stock rims with the 6.25" backspacing so I don't think it will matter much whether your rims are 4.5" or 4.75". Go for the rim that looks best to you and has the best price. It also wouldn't hurt to call Fortec and get their recommendation.
2013 JKU Sport, K&N drop in, Rugged Ridge dual exhaust, Rampage Front bumper, Smittybilt XRC sliders, SRC rear bumper and XR8 winch, Trailskins, powder coated stock rims, 3.73 with factory LSD.
2012 Chevy 2500 HD reg cab WT 2WD.