Double Elimination Heads Up Tourney Question

[DiggerDog]

My search of the forums came up snake eyes so please forgive me if there is a thread already covering this topic.

I've been hosting a NLHE tourney once a month for about 2 years with many of the same people playing each month. The pool of players is usually somewhere between 10 and 15 and the gang has decided that they'd like to shake things up a bit. I suggested that we try a double elimination heads up tournament. Everyone thought that sounded like a good time and so the question that I pose here is:

What would be a few suggested structures for said tournament?

Our regular tourney usually lasts about 4-5 hours and I'd like to have a heads up structure that will give each player at least an hour of play before the blind schedule forces players to make all in or fold decisions. I was thinking about starting each game with T1000 but I'm wide open to suggestions.

Thanks in advance for the input.