Just my observations having been down both roads..
I would agree with most of this but pay attention to the following :
1. Check the factory K Member for signs of fatigue, the pivot points for the lower control arms and the mounting points for the steering box. If you want to visually check , get someone to sit in the car and turn the steering wheel full left to right and see if the box moves. You will see the box deflect if the k frame is weak there.
2. Check the frame rails where the upper a-arm mounts. They can rust out but be filled full of debris and you wouldn't notice it as the view is pretty obstructed by the adjusting cams
3. Install factory Lower control arms with sway-bar mounts. Much better than aftermarket.
I don't do any autocross or track but I do drive my car hard with the RMS components when I get an opportunity and the car performs beautifully.
I'm with abodyjoe on this.
I wouldn't go back.