I've never quite understood the fixation/fear of blowing out an account. If a young guy only has say $5000 plus a job and he wants to speculate intraday while it would be foolish/stupid of him to put seven or eight contracts on utilizing his $500 emini margin it would be a lot less foolish to trade a three lot. Incredibly aggresive and still foolish but not -- where is the straight jacket crazy.
But lets suppose he is a profitable trader -- unlikely but possible -- works with a max stop of six or eight ticks and, except for abberant slippage -- rare in ES -- even a full stop out of a three lot will typicaly cost him a $300 loss or less. Aggresive on $5000? Of course ... nothing less than incredibly aggresive yet not the doomsday most seem to pretend. With a two losing trades and stop trading for the day policy (which I use every day) he is no bigger an underdog then in many other of life's challanges. Would I reccomend it? Never. Would I think he was among the biggest clowns I'd ever encountered? Certainly not.
There are a zillion guys playing it conservative -- never risking more than 1% of their capital on a trade etc. -- yet they never took the time to really dig deep and learn to trade. I'd rather be overleveraged with a two lot -- I can't actually bear the thought of me putting on a three lot on that tiny stake -- with some trading ability and screen time than properly capitalized and know very little.
BTW, I frequently keep tiny amounts of money with brokers with low margin requirement and wouldn't hesitate to do a three lot of CL in a $5000 account. Why not? ... the only number that counts is my liquid net worth, not what's in THAT account. As Laizze Faire (sp?) touched on if I can wire in $20,000 or $50,000 in the morning why would I worry about having only $5000 there? I like having the option of low margin brokers. They service a few niches and work well for lots of people. That said, IB is a fine place for six figure money to sit and some, not all, low margin operations ae not so fine to leave significant sum with. BTW, never used Mirus so I have no opinion of them.
Is blowing up a $5000 account the end of the world for a young guy with a job? It depends how he views the 5G. If he get's the risk up front ... go at it!