That rack looks like a great solution. However, given my low volume, it would be a waste of space and money for me. I was going by a recommendationon this forum to hang the shafts from the tip end with small hooks to minimize movement over the OD reduction and drying processes.
I'm starting with 1-1/4" squares and am very much a rookie so anything I think I know, is only what I've learned here. I have about 15 shafts turned in various states right now, a few of which are exotic woods that I'm very excited about. It's hard to turn them and then wait weeks to turn them again, and repeat, repeat, repeat..... part of the game I guess, patience has never heen part of my DNA.
That's part of the game. When you get the woods you have turned down around half way to finish size, buy some more and get them in rotation.
If you want to build cues, you can never have too much wood. It's just impossible

Even if you have limited space to deal with you'll be thinking out of the box on how to store it. (it'll be in boxes under your bed, sitting the corner of your dining room, on the top shelves in your wife's closet. Just tell her it's a valentines day gift for next year

)
From the time I started building to now, I've seen supplies dwindle drastically. I've seen suppliers disappear because of it.
I used to be able to walk into one of my wood suppliers and pick thru 100's and 100's of Tulip and King and Coco squares that would cost $12-14 each. It's all but a distant dream now! And it's not going to get any better for the guys just starting out.
Shaft wood is no different. Think about it. How long is going to take to down your 15 shafts? You need to be buying shafts in groups where you are throwing out 15 because they aren't worthy.
You should be looking and buying and dreaming of wood every spare minute you have. If you're not doing that, you're not a cue builder!
patience has never been part of my DNA.
You better make it part of your dna if you want to build cues. Nothing good comes from getting in a hurry.
Two of the hardest things in building cues....learning how to keep a 30" dowel straight when cutting it down to 1/2" in diameter and having patience!