OK, lathe, so not my strong suite, so:
First, i am pretty sure it is doable, i am also pretty sure some of the forum users did manage to make this work fine and never bothered to report back on how they did it, and there are some with mixed success still active here.
Second, probably yes but never actually did that, although i would not mix manual and auto modes as inadvertently humans will mix those modes and on big machine that is always expensive.
As for turret/no turret pin, again most probably yes with some hal wizardry, might be quite easy i think.
Any way you look at it, almost anything within reason should be doable, although it is much easier to have 2 separate configs (not installations, just a config folder) and switch between them. I would like to insist on making this work first, then make another config for mixing and testing mixed mode.