FYI!!! This strategy is severly lacking a cool name.
I read neo-bisu build a few pages back, and man, that made me smile and is an awesome name to boot because well... bisu rocks.
2) I won't be able to test this build until tomorrow, but it may be above my current level of ability as a high Gold protoss (although, only just swapped from Zerg and am having much more success as Toss). From what I understand, the DTs give your main army a huge dps increase and remain unattackable - the issue is taking out the overseer fast enough.
Does this build fall on its face if your micro isn't up to the level of feedbacking overseers instantly?