Are they the stock camber bushings or are they aftermarket with more adjustability?
You are now a player in the game of spring sag. From what I have experienced, seen and heard is that Superlift has some of the worst springs for sagging.
All springs sag, some just faster than others.
I would take it to the alignment shop as is and find out how many degrees off the bushings are as is.
Then depending on I found out, here is what I would do.
First, I would ask if they offer a lifetime alignment special.
Then I would try getting some of the 3/4" steel washer spacers that Superlift makes if the camber is off just a little.
If it is off more, I would look for new 6" coil spring. Skyjackers are OK, but I would go with the Eibach spring Camburg sells. It would function as a 6" coil in the 4wd application and will sag minimally.
I ran those coils on my pre-runner and they barely sagged. I think I had one alignment done on that truck the whole time I ran those springs.
I would avoid rubber spacers and the like. I've used them without much success at all. They usually end up getting chewed up or rotting out. That's just my experience though. Some people here think they are the most wonderful creation.
However, before you DO go to get an alignment, make sure that all of your ball joints are not toast. If there is any play in them whatsoever, it will render the alignment useless.