I would increase the share of BTC in your portfolio. Now it looks risky. Remember , if BTC goes up very high - altcoins will for sure fall down deep, at least the most of your coins from the list. So , if you have 30-40% of BTC these situations are not dangerous for you. You always able to buy cheap alts with BTC. You will have more coins as results. CHeers!
That's right, but I think minimum 50% in BTC would be better. Depends on you, if you can stand the situation when BTC pumps and alts fall.