In my opinion, the case for Ether over bitcoin makes a lot of sense. It's faster, well developed and technically people have shifted a lot to Ether from BTC. (See the ETH/BTC daily chart over the last 2 months.)
Whether you agree with that or not. Either way, it should provide for some nice trades, I feel more comfortable with Ether based on those premises and I am using a martingale strategy to enter. Trading isn't above being right, it's about assessing risk and making sure you are comfortable. This strategy is the one I am most comfortable with, since the downside could be to $500. Maybe not, but we don't know.