spray paint kit suggestions?

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2014 Mazda CX-5 GT
Made a mistake and scraped my 14 cx5 front bumper on some metal poles...definitely went thru base coat and primer in some spots, so a full putty-prime-paint treatment is in order. Any suggestions on spray paint kits? biggest scrape is about 2.5in longx1in wide, and many other smaller scratches showing primer layer
 
I'm looking into http://www.paintscratch.com/
I brushed against a guardrail and scratched the bottom side plastic bumper.

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