I bought a roll of quality Mogami W2319 cable and a bunch of Square Plug SP500 right angle flat plugs and Square Plug straight plugs from West Coast Pedal Board. (link is the same as the name dot-com)
The SP500 are very slim and small, and the Mogami W2319 is physically small and perfectly matched to the connectors.
The slim connectors and the smaller gauge cable take up a lot less room, and the cable is very flexible. Mogami W2319 is also low capacitance and low noise. (yes, cables can *make* noise, if they move...) and pretty easy to work with.
I setup my board as I wanted it, and then custom cut each cable to fit the runs I wanted so there was just enough slack to adjust or remove things, without leaving a bunch of excess cables.
As far as soldering goes, I'm pretty good at it. I just setup a work space so I could quickly and easily assemble the connectors and cables. It really didn't take long with a decent work flow setup, drilled a block of scrap wood to hold connectors for assembly, setup a ruler for cable cutting, etc. I have thermal wire strippers, but the Mogami wire is very easy to work with regular strippers from Home Depot or wherever. I just recommend nice quality, new strippers with sharp blades to make life easier.
Buy a decent soldering iron, even one from Home Depot can do the job and some quality 63/37 rosin core solder.
It really didn't take that long to do. Took longer to map out the pedal board placement than to make the cables.