re: Starting a business - please advise which type

I don't know what half that shite means, but one of the most important things you need to add is the pay. I'm guessing its fairly high, so you will likely save significant self employment taxes by setting up as a S-corp. But as the only employee, you need to speak to a CPA about that.

You need to strong consider benefits here. If they want to pay you as a contractor, it should be 40-50% more AT LEAST then a direct hire with decent to good benefits. They aren't paying their share of taxes, workman's comp, time off, and any benefits like health care.

Some people think a 20% increase in pay to do contract work is great, its NOT for anyone making over $100k that's actually terrible.

ETA: Also, need to consider CPA/ Book keeping charges for a LLC. Probably talking $2000 or so a year for a good CPA.