If you are any good at 25nl, 50nl, then you can crush 5nl and 10nl, and you should be able to build a 1000$ bankroll from 100$ in no time.
I made one minimum deposit a year ago, and never went broke. I did go broke on a couple of sites, but I started a bankroll from freerolls there, and I hand no idea what I was doing playing poker.

25NL online is not easy to beat. I do crush 5nl, and from my posts you will see that my game is far from solid. I regularly get up to 200, 300$, play higher and loose. I think there is little to no chance that you will survive 25NL. Make a 50$ deposit and grind it out. If you can't, then you would have lost your 1000$ anyway.

A friend of mine made something around 10000$ in live games, and he can't beat the microstakes online. Online poker has become quite tough. It's beatable, but it takes a lot of practice, and above all dicipline. If you don't have the discipline to build a bankroll from scratch, you will loose.

HOWEVER.
I'm close to playing 10NL again, and if I don't screw up, I'll meet you at 25NL by the end of summer, so I do appreciate the deposit!