Start trading on demoaccount is the good idea - it may save you $500 initial capital.
The idea about $30 a day on forex comes from software pitchers (I guess). The reality is smth like +$50 (20) one day -$20 (50) loss next day. You shud address your AVERAGE daily results for a month, not every day.
I do not think that any trick with small or big account, big or small leverage, etc will allow you to make more than 20% on annual basis. If so - you shud consider yourself "very good".
Now think $500 * 20% = $100. Does one hundred worth all your time sitting every night in front of monitor ?