I don't worry about harvest times too much personally. But I'm not a huge user, I'm a lightweight really and gift a lot. But I LOVE to grow it. My grows always tend to go longer than most. So I dunno.
I turned a friend onto Floraflex and he went out and got an autopot system. His plants finished around the same time that mine did = 90 days +/- and we had similar yields not including the Orange Sherbet. He did however have an issue with a couple of his plants, he grew three, and had issues with 2 of them.
I manually water too. But in my case I'm sort of a control freak and do not know how Autopots would work for me? Seems like in my friend's case he lost control of individual plant needs, because everything was getting the same. I do not know how you overcome that in that type of situation aside from having different reservoirs etc. But I guess there may be a way?
It definitely can seem appealing to me at times though. For now, I just mix my nutes up in 4-5 gallon batches at a time and feed manually. That helps with some of the hassle.
Floraflex is actually down the road from me, I've probably mentioned. I do like it a lot. I wonder if it works so well for me because we have the same water out of the tap? Sounds kinda dumb, but who knows?