Saxon,
You are basically talking about scalping.
Why did you decide this would work best on the ES?
The problem with the ES is it's .25 tick increments (even though the full S&P contract is .10 tick increments).
If you are serious about the size you want to get up to, the thing to do to even have a CHANCE at success is to trade 10 or 20 of the full size contract, not the S&P. There are floor traders who do exactly that. You won't make $12.50 minus commissions X 100 ($1250) on every win, you would make 40% of that ($500), but your chances of being able to do an 80% plus win rate would be much greater (still using a 1 pt stop), and you could perhapd do that enough times a day to make it work out.. Remember, if you use the market order method you need the price to actually move TWO ticks in your favor. I would never ecommend attempting this, though - even with super-low commissions.
One other thing to consider would be another E-mini. The ER2 for example. You can't do 100 contracts in one lot without a bunch of slippage (which is unacceptable for scalping, obviously), but you can usually get a 20 lot or less fill in one shot with little or no slippage. With that instrument the tick size is .10, which is $10, and with a 20 lot a 1 tick win is $200. You probably still need a 1 point stop cuz it's so jumpy, but that works in your favor too - the likelihood of it bouncing in your favor by two ticks even by sheer accident is very high. One way to check this would be to look at the ATR of a 1 minute chart and see the avg range of each candle.
In the end, though, it will all come down to the accuracy of your entries and how wide your stops are, even with the lowest commissions. You can't escape the math. If your signals/entries don't produce a win % greater than 80%, you will be toast.
Good luck!
W
I do hope it works out for you though.