How to improve my Gangplank crit guide?

[quote=Indee]So I just made my first build here on MobaFire, and I wanted to know how you all think it is. The purpose is to get as much burst damage as possible, so it's pure crit. Level 18, finished item build stats: [b]Health 2653 | Health Per 5 Sec 17 | Mana 817 | Mana Per 5 Sec 13 Armor 67 | Magic Resist 30 | Attack Damage 288 | Crit Chance 110% Crit Damage 257.02% | Attack Range 100 | Movement Speed 416 | Ability Power 0 Attack Speed 110% | Life Steal 0% | Armor Penetration 24.93 | Magic Penetration 0 Cooldown Reduction 8.1% | Dodge 0.0% | Gold Per 10 Sec 0 | Reduced Death Time 0%[/b] Summoner Spells: [[Exhaust]] [[Flash]] Mastery Tree: 21-9-0 Runes: 9 [[Greater Mark Of Desolation]] 9 [[Greater Seal Of Furor]] 9 [[Greater Glyph of Celerity]] 3 [[Greater Quintessence Of Desolation]] Items: [[Brawler's Gloves]] [[Health Potion]] [[Health Potion]] [[Zeal]] [[Phantom Dancer]] [[Phantom Dancer]] [[Infinity Edge]] [[Infinity Edge]] [[Frozen Mallet]] I'd really value some input. If you have suggestions, please keep in mind the purpose of the build: high crit chance, high burst damage. If you'd like to support the build, here it is: OR NOT - LINK REMOVED[/quote]

[quote=Jebus McAzn]http://www.mobafire.com/league-of-legends/forum/build-and-guide-discussion/topic-rules-read-me-first-3012 Please read forum rules before posting threads.[/quote]