Just remember to sticker well. Airflow is key in drying green lumber. Almost all of our lumber comes green, straight from the mill. 4/4 dries a lot faster than 8/4, so I prefer it for that reason. 8/4 yields more sets per block, but we don't always have the convenience of being able to dry and season the thicker stock.
I usually have one load on the wall, which I sort, grade, and mill into billets. There's another load in the kiln, and one stickered in the back of the shop. I keep a big shop fan blowing on it 24/7. The 4/4 drops to about 20% in about a month, even if they're dead green. If I'm lucky and they're all relatively dry, I rotate them in the kiln, and they're done in 4 weeks.
Again, I cannot stress enough the importance of airflow. Even in a kiln, lumber will not dry properly with poor airflow. Drying wood is a passive process and it will only dry as fast as it can exhaust moisture to the air around it. Think of a scoop of sugar dissolving in a cup of water. You can dump it in and wait for half an hour until it dissolves, or you can stir it with a spoon and have it done in a minute.
Fans aren't necessary, if you can stack the lumber in a breezy area.
Also, don't forget to seal the end grain. If the wood is over 30%, you will get some degree of checking. The greener it is, the more you'll get and they'll travel deeper into the log/cant/billet/board.
If you're really impatient, you can cut the logs into 4/4 boards and sticker those with airflow for 1-2 months. Like I said, they'll drop surprisingly low, relatively quickly. It's getting it below 20% that takes a long time. But, there is a trick if you want to start working with it sooner. After letting the boards air dry for a month or so, you can resaw them to your rough set thicknesses and sticker them with chopsticks or any kind of small wood that will act as stickers. Rubber band the ends to minimize warping, then blow a fan on those, or put them in a climate controlled room or box for about a week. Even better, if you can blow a fan through, in a climate controlled room. Air conditioned rooms are great, since they dry out the air. In fact, most traditional kilns are basically ac units, with fans circulating air in a temperature controlled room. As long as you have good airflow and the humidity is right, you'll be able to drop them to 6-10%.