hello, i was wondering if anyone can give me advice on a few stuff. i have a 94 c1500, i mainly use it to haul the family and my car. i'm planning on using a fabtech 7" lift kit. and possible a 33 or 35" tires. is there anything i need to watch for? and is there anything else i need to get along with this kit? what final drive would you guys recomend?TIA. btw i am using a set of spring helpers. would that be a problem with using lifitng blocks that i assume will come with the kit?? heres a pic of my burban and the weight it hauls.