Floating rotors aren't as strong for a start! They are two pieces riveted(?) together so they aren't as strong as a one piece rotor. They are supposed to be so the heat dissapates quicker in DH riding etc. So not really useful for trials, I remember a video when I first got into trials with a person snapping them easily, I really doubt they'd last with front wheel moves.
As for pads I'd stick with Hope pads they seem to be the most reliable!