would guess. 2 weeks ferementation, decorbonize.letz sit. 3 days, rebottle with little bit of sugar, let go for one week. ready to drink. would guess 4 weaks. ferementation is the tricky part, it can go fast or take forever..
i also work with bottles. i would fill them more to the top. this would leave less space for oxigen, but the drawback is the foam and if you are going to give more sugar into it, it will be a mess.
and yes, bread yeast is not that nice. tried it couple of times but the taste was not nice. wine...
sounds really interesting. i would say that the first recipe with the grapes and the orange juice, that the orange juice is too prone to catch some unpleasant organisem. once i read that orange juice is hard to ferement, because of that. guess in the future i will also try to utilize some wild...