Why do we ask for just enough from the God who desires to give us all of who He is? Didn't Jesus teach us a better way to pray? Read Matthew chapter 6 and you'll see an example of prayer that doesn't ask for just enough, but instead asks for the very will of God to be done. A prayer that invites the Kingdom of God to come, here on earth as it is in Heaven. That doesn't sound like just enough, that sounds like everything we will ever need and more.
I don't know about you, but I'm tired of just enough. I desire all that God has for me.