That pricing sounds good... I asked about your timeframe, because with the release of the H+ quoted as 3-6 weeks off, you will find several good offers in the "classifieds" sub-forum soon, as well as RMEIII's offer above. If you're getting a full 1 year warranty on that $400 offer, that's not bad... just know that if you ever do need warranty repairs, the time involved in that repair and where the H is repaired are factors out of your control.
Getting the simulator is definitely recommended... the complexity of the layout of the ST-16 can be intimidating... using the sim will allow you to get used to what the flight controls do. It does not provide a simulated camera output, so the camera controls will not do anything, but that's better to concentrate on flight aspects only.
There is a ridiculous amount of information on this board... what is not obvious though in this board software is how to find all that info... use the search function, which is the little magnifying glass icon in the upper right, above your username.