Does this sound like a good Saturn plasti fender repair?

Ideally, a replacement fender will come along at a jonk yard. In the meantime, it i a small hole and a 3" crack caused by an accident. My repair will be to reach behind, sand paper the back and coat with fiberglass gel followed by a fiber glass impregnated patch which will be smoothed on behind the crack.... show more Ideally, a replacement fender will come along at a jonk yard. In the meantime, it i a small hole and a 3" crack caused by an accident.
My repair will be to reach behind, sand paper the back and coat with fiberglass gel followed by a fiber glass impregnated patch which will be smoothed on behind the crack. With tape on the fron to keep it perfectly closed and aligned.
Then if I get that done, bondo on the outside. and paint.
Does this sound like it will work?
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