+1, sounds good, just need to mention that 5% might not be enough, if your trading amount is not so big.
I prefer 20% for scalping, and I hold around 30% in a bitcoin just to have it (in case if it gets.. hmm.. 50 000??)) and other 50% I use for.. let's call it medium-term trading. And it's true, that scalping is not for those, who are lack of time and attention.