Have a 15 ecsb ltz 4x4 with 6.2 and leer cap, have 2"rake now,36.5 front and 38.5 rear, want to leave 1-1/4-1 1/2"rake for tow/hauling. Thoughts on bilstein 5100 set at top and a 1" block in back or 3rd setting an no block in back, stay with 275/55-20 tire. Worried at top height I'd only have 3/4-1inch rake and would be nose high with 2-300lbs in bed?