I have a different way of managing capital than you. I am a long-term investor and focus only on Bitcoin. for other alts I don't care because Bitcoin is the market controller. so I put my money in bitcoin and determined the prices that I could buy and hold for a long time. Whenever bitcoin has a strong dump of about 5 - 8%, I will deduct about 15% of the budget to buy bitcoin. that is my trading strategy and how I manage my capital.
Even I am also a true bitcoin believer, I'm focusing on other altcoins as well because one of the basic principle of investment is diversification. To minimize your risk, you must need to go for diversification. I am believing into bitcoins with more than 90% of my capital and for the rest of 10% and taking risk with few altcoins to get more number of bitcoins in future. I mean I'm not investing into altcoins for gaining more fiats but for making one number of bitcoins. I am calculating all my altcoins' profit-loss ratio only in BTC values are not in USD unlike most traders are doing.