Will I need Eth for crowdsale or can I buy in with BTC too?
The crowdsale will be mainly in the form of ETH. If users only have BTC, a shapeshift opportunity will be available. The ETH will be stored in a multisig client and will be publicly visible for people to check balance.
Yes a BTC to ETH conversion will be available in the lite wallet - the ETH will be then be converted to SNGLS.