Adjusting Taco Lean and Adding Some Lift

To all,

I have a Tacoma 4x4 DCLB with a Icon Stage 3 lift (http://www.tacomaworld.com/forum/2nd-gen-builds/301096-arrowshots-build.html). I put on a CBI Bushmaster 2.0 bumper with a lift gate/accessories on this weekend and it definitely dropped the back with all the weight which doesn't even include how much it will change when I load the truck down with all my camping gear (see my link with the measurements on page 2). I am planning to get the U-bolt flip kit for the rear but also considering the following. I want to correct my Taco lean and see if I can gain another 1/4 to 1/2 inch in lift with my current suspension at the same time to compensate for when I add gear for camping. Is there any reason why I could not insert a 1/4 inch plate under the U-bolt flip kit on one side and then a 1/2 inch on the other side (as well as adjusting the adjustable coils on the front) to get rid of the lean and gain a little bit more lift? Any reasons why this is not a good idea?
Thanks for replies!

 

Bump.

Comments please.