For that much lift you will want more than a 1" longer lower links.
I know I had posted up a request for the length of the stock links of the sidekick when I did my lift for just about the same reason as you,(let me go thru my older posts to check) I had to cut them out and forgot to measure them prior to tossing them. I am currently at the max 1.25" over stock offered with my AE rear links and it could use another 3/4" easily!
Found it!,,,,,,""""I got 18 7/16 which may be a little too accurate for a tape measure and rubber bushings but they were all about the same. Between 18 3/8 and 18 1/2."""