Basically, if you're good enough to beat / play in the higher stakes tournies, you'll build a roll big enough to play in them eventually (and probably sooner rather than later). You just need to be patient.

Right now you may feel like you fit in at the high stakes games, but to be honest, that still doesn't mean you'd be beating them, just breaking even (minus the rake).

A $2k roll is nothing in these tournaments. Its that simple. Enduring the mildest of down swings would bust you.