Definitely keep your stuff. I just went back to stock srt parts and it cost me $1750.
You need 2003 or later fascia, but I think any 2nd gen hood will fit (I know an 02 hood will fit.) Don't do CF because you'll need to massage the bracing under the hood to keep it from hitting the water neck.
You'll need to re-route the fuel line or it'll rub the hood. I just replaced the line and rail with the perrin kit.
I'm sure that teh large fmic will fit as long as it doesn't sit out more than the bumper brace did.
The 15" snowflakes fit on my car, but rub the front calipers on others. I've run tires as large as 205/65-15 witrhout rubbing.
If you remove the side skirts, prepare for hours of fun removing all of the tape that held them on. Also, you'll be left with small holes under the door where they used to be. They aren't noticable unless you get on you knees though. If you don't remove them it looks kinda weird to me.
Whatever people say though, I don't think they are ugly - you can do a lot depending on what you are trying to achieve. These 2 pics are of the same car.... One stock, one not so much.....