If he isn't used to F/T rats, its very doubtful he will take them any time soon. You may want to try F/T mice first, and then convert to F/T rats by scenting/defrosting together, etc.

Personally, I wiggle my F/T around and get good feeding response with it. Some will take it laying there and others want it to move. Depends on the snake.

Oh, and you don't need the UVB bulb, just use that UTH with a thermostat and youll be set.