I would Coinbase Litecoin to an exchange, sell to BTC, and buy steem. Blocktrades cuts a few exchange steps out, but won't be cheaper.

I'd be surprised if STEEM goes lower than a dollar, but wouldn't wade in til then or likely at any point. Holding STEEM power gets you noticed and gives better curation rewards, this is my logic behind not worrying too much about landing the lows.