Here are some earlier threads on that topic that I thought were quite good:
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http://www.chess.com/forum/view/general/how-i-became-a-2100-fide-rated-in-1-year
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http://www.chess.com/forum/view/general/how-to-became-a-international-master-in-two2-years2
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I improved from 1000 strength to 1800 strength in one year.
go for it, definately do-able. im 15 atm, when i turned 13 i was 1600 now im 2100s.
also if you get a coach it will help alot...