If you are planning to use an Online version of TurboTax, you should purchase TurboTax Premier or Self-Employed (the latter if you have income from self employment).
You could use any desktop (CD/Download) version of TurboTax, but TurboTax Premier will give you more guidance than the lower versions.
Personally, I would recommend using a desktop (installed) version, particularly TurboTax Premier, since it will allow you to access Forms Mode which can be invaluable for your scenario.
