White aggro deck

[Thaye]

I've got a new fast white deck that I would like to have feedback on. Any ideas to improve it?
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24 creatures
4x Deftblade Elite (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=45132)
3x Mystic Crusader (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=29802)
2x Order of Whiteclay (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=146007)
2x Daru Mender (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=42053)
2x Karona's Zealot (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=45858)
2x Silver Knight (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=44313)
1x White Knight (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=274)
1x Knight of Meadowgrain (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=139715)
1x Hand of Honor (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=74173)
1x Knight of the Holy Nimbus (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=118907)
1x Leonin Skyhunter (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=83416)
1x Pianna, Nomad Captain (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=31790)
1x Outrider en-Kor (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=118902)
1x Slith Ascendant (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=46069)
1x Cho-Manno, Revolutionary (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=130554)

16 other spells
3x Topple (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=21268)
3x Unmake (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=151083)
2x Chastise (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=45200)
2x Wing Shards (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=45835)
2x Light from Within (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=151139)
2x Leonin Sun Standard (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=49768)
1x Charge across the Araba (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=74186)
1x Swell of Courage (http://ww2.wizards.com/gatherer/CardDetails.aspx?&id=152729)

20x Plains
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The objecitve of the deck should be pretty obvious: start attacking the enemy quickly and keep him from growing too strong with Unmake, Topple and Co. I've mostly put in creatures with more than just one white mana symbol in their costs because of Light from Within.

Note: I know there would be a lot more creatures fitting into this deck like Dawn Elemental or Divinity of Pride. The problem is that I just haven't got any of these, so I decided to keep it weenie. :p