I know you want to go for low budget, but for a couple more dollars or so, you could exchange
Unflinching Courage for
Armadillo Cloak. The difference is that AC says that you gain the life, meaning you could attach it to an opponent's creature and essentially make that creature have 0 power [though toughness is increased, so it is still a VERY viable blocker.]
And for what it's worth, since your deck is 35% enchantment, I would look into the "enchantress cards." They're all either green or white, so they go good with your deck, and most of them are low mana cost, low budget [I think], and allow for extra drawing capabilities, or, in the case of Yavimaya, add A MASSIVE power and toughness boost to her.
http://gatherer.wizards.com/Pages/Search/Default.aspx?name=+[enchantress]
Or, if that link doesn't work for you, their names are:
Argothian EnchantressFemeref EnchantressMesa EnchantressVerduran EnchantressYavimaya Enchantress