Hey roll, Buds look great!! I've a couple day's to a week or more myself. Just kinda start the flush and harvest when I have time. Even though I can't tell the difference between the flushed bud and the stuff I might have picked early to sample. I don't think in hydro you really need the Final Phase though. You can just change the res to plain water and it will have no nutes to uptake. You can't do that in soil, there's always something left even if you rince them really good. With my last soil plants I ran about 12 gallons through 3 gallon pots and let them go about a week I think before cutting. I don't know if it would be faster in hydro since you are really just trying to get rid of what is in the plants. And at time of harvest they really don't want to much for nutes I think. They just want to finish and die and won't take up much anyways. IMO of course.