so it seems like for example if you want to model the edge tone with KPA - amps no problem. But you may need to connect a strymon or some such delay pedal to your rig
nope, this exsample just isn't correct. the delays are quite powerful and The Edge-type delays are easily possible. In fact there are factory rigs with those settings.
You are approaching the point of over-analysing without ever having played the gear in question.