You're gonna have to get a spare bumper to put on. I've done a back bumper. The smoothing job alone will take weeks: sanding off paint, plastic welding over the recess, sanding down the high points of hard plastic, then endless filling, letting the filler settle, block sanding and guide coats of paint to get the contours right. You won't realise how difficult it to get the lines smooth til you do it. The contour from the top of the rub-strip recess to the bottom of the recess is different to the contour of the rest of the bumper, it won't be right if you just follow the recess
I won't be doing the front bumper
