If Ethereum reached $10k by end of 2018, I think Bitcoin would be at least ~$58k, likely higher. I don't think it's terribly likely we see a sustained Flippening happen, so that number is based on them being tied. I didn't adjust for inflation and it's back-of-the-envelope math so don't read into it too much. FYI this isn't a prediction, just answering your specific question.

I wouldn't jump into the ICO storm too much. I am hoping eventually there are ICOs where the developers have a working product first to show people and have them use with "fake tokens" just to get an idea of how it works, then raise capital. That'd be more professional, but that's just me. I probably won't touch ICOs still, regardless of how out of favor they become.