Depending on your country, Polenix might be better and is one of the bigger exchanges.
I'm pretty sure they don't have limits.

It's good that you have a diverse portfolio.
For me, I'll be buying as much bitcoin, Steem, Ubiq and Etherum in 2 weeks times hopefully when the prices have hit the bottom or close too.

They all have massive short - long term growth potential and It's likely ETH will reach 220+ again within the next few months.