Is there anywhere in Singapore that sells George L or Lava solderless patch cable kits? Also, a place that would make them to your pedalboard measurements would be handy
TYMC does custom pedalboard patch cabling. They don't always use George L / Lava but if you specifically want it I'm sure you could work something out with them.
Yup they can measure, cut and solder custom patch cables for you. I think they use Mogami cables. For alternative cables you can try Evidence monorail.