Installing Dedicated Power Lines -- Need Advice

A few random observations:

I'm sure you've checked, and a lot has been covered here, but a search for "dedicated lines" will reveal numerous useful threads -- common topic.
I've lived in three houses, and did dedicated lines in the first two.
In one case digital and amp on different lines, in another not, in all cases, upgraded outlets.
I did not notice dramatic differences, and am not in a hurry to do it in the new place.  But  if you've got room on the panel, and no special hassles to deal with, it's pretty short money by audiophile standards, so why not?
I definitely liked the piece of mind of whole  house surge suppressor, which is also a reasonable outlay.
I'd certainly use a licensed electrician for liability reasons.
FWIW, the "sparkys" I consulted on these projects were completely incredulous that audiophile details like heavy gauge romex could make any difference -- but then, they don't like pulling heavy romex.

I just wanted to add to what @jdoris said above. Your electrician may laugh at you when you tell him you want 10 gauge romex. He might ask if you plan to use an arc welder in that room. Don't let him change your mind. Tell him what you want and if he doesn't want to pull it get someone else. I ran my own 12 gauge circuit only because I already had the wire and space in my panel. If I had to buy the wire I would have used 10 gauge.

Declare looks like a very good power conditioner. They explain exactly how it works using filtering.
PS Audio is a power regenerator. I think you should go to their website or a review to understand how it works.

I use balanced power. The unit separates the hot and neutral from ground and filters the noise from the mains and other components, then outputs a much cleaner AC signal to be used by the audio system.
A new signal isn't regenerated, a much cleaner signal is the result. The Decware looks like it uses a similar process.

I also have a whole house surge protector. It’s purpose is to protect all electrical devices in the house from spikes, fluctuation in the incoming power, and lightning strikes. It doesn’t clean the dirty power coming into the house from the grid.

I live in a city where power is dirty and has distortion that can be heard through my speakers as noise. That’s why I use a power conditioner. It lowers the noise floor, it’s providing higher S/N.

The best advise given was to look thru the archives and read the threads relating to "dedicated line."

Any competently built audio component should have mains noise filtering. AC , alternates, there is more noise inside the device than on a typical 60hz line, the filtering is to keep noise from entering your mains wiring as much as filtering any noise out of it. The best advice is learn about electricity and basic electronic requirements.