Why don't you Hold ETH and Buy Waves ?
You should hold your ETH, you can buy waves with that money.
3 ETH are more than 3.000$
ETH made the big move last year, do you think it will make similar move this year? I don't think so. Even if it rises it won't be the same. WAVES also made big move but not big enough as ETH made. If he switches ETH to WAVES he could find bigger profit because better margin rates. It's up to him though.