I guess it make a difference if that is on $5K, $50K or $500K. 10% per day is an interesting goal. 10% per quarter is hard when you scale up.
Definately, larger the account the harder it'll be. Don't hit 10% often, don't get to trade often had a clear day today, but working on a few things. Obviously have down days and business is crap so I withdraw too damn often recently, just short of 5K here USD. First day back in 2 weeks, on 1/2 position size aswell, so would of been close to 10% today if not for that!
300-600 per week is fairly typical, need to let the account grow up the lot sizes I have weeks when i just don't trade at all, trying to trade from work or with the kids, work in progress currently. I seem to of stopped the stupid averaging down now 30% in 30mins days, reducing margin from 200 to 50 solved that. Edit losing 30% that is!
Much difficult to do breakout methods as if HFT comes in, you end up getting 2-3 ticks slippage, but retracement entries like fibs and numbered retracements(so many ticks/points from previous highs/lows) work well. Trade less signals/time but add size. You have to concentrate on not losing so you can average down so even breakeven trades do very well when you exit all averaged down positions at original exit of plus one tick.