For now is not a food decision because the ethereum price is falling down and the bitcoin have a highest price now i suggest to you dot do that choose bitcoin now.
Based on market conditions nowadays, I don't think it's safe to do so. Cause it's better to have several positions, it's better to have ethereum and bitcoin together. You can sell some of your bitcoin and buy other coins, like ethereum or EOS, qtum, for instance. We know that way putting all your eggs in one basket is a not a clever strategy. Good luck mate.