#1
By your amp or where you sit/stand when you practice or play. As in, I just bought some pedals and the cord I have sucks so I'm getting a new one, what lengths should I get, a few patches and 1 long one, or 2 semi-long ones and some patches, so I can have like an island of pedals at some distance from the amp. I heard something like having them near the amp can create unwanted feedback or something.
#3
i have 20' cords, so when i play on a big stage i can have my pedalboard at the front and my amp at the back.

EDIT: i use 4 of them, because i run a couple pedals through the effects loop of my amp, and i run wireless onstage.
Now officially has too much gear to list

PM me if you want to know about my recording setup