I'm assuming you want to focus on trading not investing. If you don't have time to research and follow individual companies, focus on Indexes, commodities, bonds and currencies (futures and options) and focus on correlations. Trade pairs and spreads. That way you are not focus on directional...
I am a retail full-time trader thinking of starting an entity, LLC. I know I need to speak with a CPA/attorney for legal advice. I'd like to hear personal experiences on trading as a retail vs under an entity.
Just throwing ideas, haven't actually build one yet.
Any brokers with API support (e.g. Ib or LS) you could set up web services (e.g. using RESTful so can be used as your APIs) in the cloud which can make calls to your broker. Setup authentication/authorization services and may be even...