That is a cost effective idea for the most part. However, you'll be much better off buying a Grassroots4x4.com centerlink ($250), Idler arm brace from 4x4parts.com ($30) and using that extra money to upgrade your sway bar bushings, strut rod bushings, etc.
Not that the calmini kit isn't good, but what do you do when you need to buy replacement parts for their kit, or after so many miles you want to replace bushings...they cannot be found and new parts are not sold individually.
Also, speaking from experience, the closer to OEM you keep your rig, the easier it will be to work on and buy parts for, and the cleaner it will look.
Either way, good luck