Speaking from experience, I would not overspend on a tournament like this. Everytime I've used poor b-roll management (especially on Pokerstars) for big MTT's like that, you are just asking for trouble. You don't play your same game and you make more mistakes then you typically would otherwise. You may not think you're doing it but it's kind of a subconscious thing, especially since your goal is going to be the crack the money for the most part as opposed to trying to win it. Not saying the same thing will happen for you but I would take a pass on that one unless you are rocking a decent bankroll.
I'm in it but only because I got in through a $2 tourney. Not worth the $11 it costs. But I hope I do well.