Flowering days separate

Growers plant seeds from the same strain same batch at the same day and plants still develop at different rates. Grow them together. Later (depending on a result) either harvest together or partially as some growers do.

Breeder estimates are educated guesses at best. Your "fast" one might take longer and the "slower" one could finish early. Even when growing the same strain things don't always finish the same, especially when multiple phenos are involved. If you gotta chop em all at the same time you just have to base it one when most of it is ready.

don't dry in your tent, anyway. It's too small of a space unless you live in an arid climate, then it might be an advantage.

What exactly do you want to know? If it’s about getting one done earlier and needing to dry it, just take a big box, make a hole in it, put a tube on it, and connect it to the tent. Ventilate the box and keep an eye on the temperature and humidity. Even though it’s not easy, since the tent has different values than what you need for drying. But what else can you do?