3rd or so +1'ing EBS flat patch cables. Reasonably priced, excellently made, available in enough sizes that buying a selection suited to your needs will get you fully set without breaking the bank, even with extras to allow for reordering as desired. Re: solid connectors, I ordered a couple of those from EBS as well, and have only been able to put one to use so far. It's one of those offset ones, so while I need to take care lifting both pedals from the velcro, they can safely wiggle a bit. I'll admit, it's really space-efficient.
Order-wise, I'm a fan of octave pedal first, even before compressor, because octaves very often change your output level a bit, and having the choice of whether to let it do so or squish it down is my personal preference. Also, compressor before or after reverb is a decision of more studio-like control or more of an amp gain stage treatment of the reverb & delay, and both setups have very useful and musical results. Fun stuff!
As for voltages, I'm currently at this station of thought: 99.643% of the time, whatever voltage they list, run that voltage. Unless you're slapping the E string with your whole body, you probably don't need more headroom than most pedals allow (especially where one pedal's extra headroom might just clip the next one anyway), and it'll ensure you don't fry anything. And if you've got more pedals than outlets, daisychaining a couple of lower-draw ones is normally fine, though the odd one may get noisy; no harm, just try chaining others.
Currently I've got 11 pedals hooked to a TrueTone CS12, mostly low-draw and a couple (Two Notes Le Bass & Darkglass Hyperluminal) pulling most of the current. Really flexible unit and has been flawless & silent thus far.
Looks like you've got a pretty sweet pedalboard build coming along yourself!
