How to get my power cord priorities right system wise

Right. Buy one, try it on everything. This is in fact a very good thing to do every time, at least until you've done it enough to have a feel for it. Bear in mind that no matter what anyone else says only you can decide what really works best.

As for the one to recommend to start, could not be easier: Synergistic Research Master Coupler. The only power cord so good they've been making it not for years but for DECADES, there are lots out there so no problem finding one and yet they are so good they still command good resale value even after all this time. You can do better, but only by spending a LOT more! 

Depending upon if you have all your equipment plugged into your conditioner that would be the first place that I would place a high quality power cord. That is because all equipment plugged into that conditioner would benefit. Next would be with the individual source components. IMHO of course.

Welcome to the never ending power cord adventure...

ozzy

While I totally agree with the posts made by the three very knowledgable audiophiles posted above my post I'm going to mention what I've experienced with several of my systems. This is the order that I found to work best for me, your mileage will obviously vary.
Conditioner
Dac
Transport
Preamp
Amp
The reason I like that order is that I did exactly what was described above, moving one high-end power cord from one component to another and the order I listed gave me the most notable improvement. There are way too many variables to explain why.