Tire question for the rig

Ok I have the RE 4 1/2 lift and 2in spacers front and rear, I don't have the adjustable control arms, just the ones supplyed with the kit. I want my next tires to be the super swamper TSL 33X15.50's (I like the look of wide tires) will I be able to fit these with the control arms I have or will I need to get adjustable to better center my axle......and second will the 15.50's fit on 15X8X4.5 rims or will I need to go with 15X10X?..?

ok I just saw they had a 31X13.50 also, might just go with these keep the drag down a little bit and will still have that wider look