Personally, I don't believe that independence will be a very wise option for Scotland. Firstly, the pro-independence Alex Salmond seems to be dodging pertinent questions such as Scotland's future currency and economy. During the most recent televised debate, he was dodging the questions about the future currency and denies any relation to the Euro (Scotland CANNOT keep British Sterling if independent). A new currency would take time to integrate and cause difficulties for businesses and trade immediately
Secondly, a lot of large businesses in Scotland were known to be relocating to England/Wales as independence would break up the strongly united markets of the two countries and destabilize the Scottish economy, leaving it worse off. It would have to reintegrate its trade partnerships and relations with other countries. The UK trade would allow both countries to benefit from combined trading of resources, however Scotland's primary trade commodity is offshore Oil and Gas and as an independent country, will prosper less from trade.
Other issues such as security, the EU etc have been outlined by the Scottish government but they cannot be hidden and have to be acted on straight away. The EU alone would be problematic as Independent Scotland may have to negotiate new terms EU membership and may get a worse off deal.
Personally, I believe Scotland wouldn't cope under independence (I'm English BTW with Scottish family).