hi all i just bought myself an onza t-rex with: tuff guy forks kobe stem cane creek headset ddg bars ,chain ring and seat clamp middleburn chain wheel and pro components crank set needs: brakes: avid bb7s? wheels: front got, rear wtf? i need help basically this is what ive got need rear wheel help also can you confirm these brakes are good ? pics coming if you wonna see george