Tradition and superstition dictates a 13-knot noose, just sayin'...
Just some wee gallow-humour to start with.
The linked hanger looks good if you've got enough blank wall space for it.
[Ramble on]
However, they assume every application is for a studded wall.
There are no studs here. It's all poured concrete, so would have to drill deep into the wall with metal anchor points inserted then screw the String-Swing Multi into the inserted "studs". Plastic inserts are craptastic and don't work well enough with my shower-curtain, so I wouldn't trust that multi-guitar unit for my needs unless metal metal rods, and even then...
I also prefer staggering high/low to all-in-a-row, less likely my clumsy self will bump instruments into one another. Given space constraints, individual hangers can be scattered throughout a room, the instruments given a place of prominence like the fine art they are. For accessibility, such as a home-studio situation, it's better having all the instruments close to each other for easy access/swapping (again, space permitting).
If I had a lot of instruments I'd get two of them and mount one above the other but staggered (obviously).
Budget-wise, you've already got the individual hangers, save your dosh on the hangers and buy a map/plans storage drawer for all the pedals you're building. (Heck, some of those plans/maps cabinet-drawers are almost big enough for a guitar!)
Those portable briefcase/guitar-case sized stands would work for home (if you've the floor space) AND at the gig, whenever we all get to gig again, if ever.
[Ramble off]
A solid integration of both Functionality & Aesthetics is what I would shoot for — whatever best works for you.