Thats what I did. Got a cheap HBS 2.5" Level, and am planning on replacing it with 5100s when I do my shocks
My brother has 1.5" strut spacers but he has an FX4 His CV axles are pretty steep but no binding the I know of I believe it's on the drivers side, the upper control arm hits the coil bucket at full droop
Best is subjective and you will get lots of opinions. I can say that the ReadyLift is one of the best kits out there.