There is no way you could basically give 100% of the money to the cause straight up, the country isn't stable enough to withhold that much, how are they expected to produce results when Kony's men could easily destroy say the schools they wish to build for example. Kony could even hold Government bodies ransom for that money as another example. Apart from that, it's obvious other expenses must be paid which has been addressed already.
But the real question again, is why are they raising awareness now after 11 years? It's simple really, the US Govt. want the oil that was recently found in Uganda which has been said to amount of billions of barrels. It's a coincidence, I mean the US. Govt. have sent bogey men to kill this guy and other select targets over the past 11 or do years and have failed (the recent being 4 years ago).
Here's a quote from an article in regard to the Oil scenario from the NY Times:
Uganda’s Parliament voted in an emergency session in mid-October to freeze all oil contracts and begin investigations of the country’s prime minister, internal affairs minister and foreign minister, all of whom are close to the president and have been accused of taking money from Tullow Oil, a British company in Uganda that was scheduled to complete a $2.9 billion deal with the Ugandan government and two other companies to produce Uganda’s oil. Tullow has denied the accusations.
So basically the West just want their hands on the oil, on profit. Our Governments have begun dealing with them only when profit is involved, making a case by causing outrage among the people because of atrocities caused to innocents, yet it has been going on for over a decade, so why is it raised now?, look at recent events in the country and you can see as clear as day why the west is taking an interest only now after tens of thousands have died already, for money. Why not hey? It's a third world country, we'll just play Superhero, save the day and make commission on the side too (oil).
What's stopping them from bombing the shit out of his HQ regardless of innocent children etc and putting and end to him, no one has to know, let alone the truth anyway.