Investing in Both coins is good because the prices are down right now. However, i will advice you invest in more of ethereum than bitcoin because its very cheap now and bitcoin is expensive, it's also a very promising coin, its certain the price will increase when the market is stable and it will give you huge returns and at the same time help you generate bitcoin more. Buying bitcoin now is expensive but you can buy a bit of it. Investing in ethereum will give you more bitcoin when exchanged.