I can't agree with some of the advice given. As a turret user, I would say that the productivity won't be there without the powder measure, which is only $30-40. If you don't prime on the press with the auto-prime, you will have to handle cases one more time than necessary. I would not listen to those who suggest routinely running the press without the indexing rod. That could have its place but does not exploit the full capability of the press, when doing multiple operations around the turret.
If you do load primed brass, done separately, take the decapping rod out of the sizer die.
I don't think it is really useful to go for the absolute minimum to be able to reload. That would get old fast, and with Lee, adding capabilities is not expensive.
My turret includes all the goodies from Inline Fabrications, so check them out for Lee offerings. I have a high mount, an ergo handle, a finished round ejector, a light strip, swing away bin mount, stationary bin mount, and bin plate. I also have a large flexlight to aim into the case mouth to verify powder charges before placing a bullet for seating.
While you are at it, if purchasing lead bullets, get what you need from Lee to do resizing in calibers as necessary, because the bullets are often larger in diameter than labeled and larger than the dies expect for ammo that will chamber freely.