Hey, Howz it? Congrads on your trade in. I'm sure you'll be very happy with it, as I am with mine.
I had mine lowered about 1.5 inches with the Eibach Prokit series springs. Alot of others have gone with Eibach as well. You will need an alignment afterwards. I was told you should always re-align after having it lowered. I ordered the springs from a local authorized Eibach dealer and had the local Dodge service department put them in. The total cost was somewhere around $850.
As far as ground clearance issues... I do have to slow down some on standard height speed bumps and driveway entrances. On the really high or extreme speed bumps and driveways I pretty much slow down to a crawl (especially with cargo or full passenger load). I also have mud flaps on mine and the front ones are the lowest point of contact on my RT.
Eibach also makes a Sportline series spring that is more extreme which I would imagine requires much more care and consideration around bumps and such.
Here is the link to the Eibach site.
http://www.eibach.com/cgi-bin/start....ach/index.html
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[center]Dubair CAI, Magnaflow Exhaust, RKsport Viper Hood, 65standard Grille, Danko Chin Spoiler
Eibach Prokit, 20x8.5 Foose Nitrous, Toyo Poxes 255/45/R20