Bankroll Questions

[Sir Pwn A Donk]

Well, I was given amounts such as $5-$20 by a friend, and kept going bust when I first started...got $5 again, got up to $200 or so, went bust...twice same scenario...got $5 again worked up to $200, went down to $5, and got up to $300 before winning an $8 Sunday Million DS and taking the T$ and working up to a bit over $500 now where I stand..

Now, I hope not to go bust again, but I feel I am at the point where I can earn decent pocket $$ while building my roll..what are some good limits for a person with my roll to start building to a bigger roll at? And, at these limits, what is a reasonable monthly goal?