Hidden costs of lowering

[SquareOne]

So my spindles and flip kit came in today. This will be the third truck I've lowered, but the first square. I know that there are going to be some "surprise" expenses along the way.

I am going to go ahead and do the ball joints and bearings and maybe freshen up the brakes while I'm there.

I'm not trying to mess with the control arm bushings or anything with the tie rods. Is there anything anybody has experienced along the way that I should order now and not have to hunt down on a Sunday when I'm trying to put it all back together?

More pics to follow!

Sorry about the sideways pictures. I can't figure out how to get them right side up. I hope I have better luck lowering my truck!