LOL 3-5 ticks, that is funny, what dreams are made of. Man if you can average that, it be incredible. Get back down to Earth, scalping has many scratch trades and lucky to have them, but you still have fees, slippage, I never chase the market and generally use limit orders. I use to do up to 300 trades a day in ES when I was much younger. Much depends on how markets is playing out, too volatile, go elsewhere manually. Now with automation, trade as many symbols/hours you have money. But remember, if you using same rules to scalp Hogs, as to scalping Indexes, each market has it's own personality and hours most active, it is way not one size fits all. In scalping, it is not the getting in that is important, if volume is too low, the getting out might nail you but hurtful.
I have found if you scalp markets around the world are most active, like after USA day session closes, then few hours Japan Yen, Aussie/New Zealand currencies, gold, then Dax, Bund then Euro, UK back to USA. Always check for currencies when news coming out, you can take huge loses by not knowing when reports are due.
USA Indexes very different, some run/gun and ES chops for hours then all of a sudden screaming one way. ES is a hedge for many, NQ has more decent moves and ranges usually larger cash ranges.
Good luck.
