Do I need upgraded power cables?

Puritan Labs PS 106 is reasonably priced power conditioner/surge protector, $1300.  Yes, I run one on a smaller system.  Patrick Cullen power cords are price/performance terrific.  Yes, I run those in the same smaller system.

Balance need be struck considering your system.  Nothing outrageous in price.  Enjoy the ride and results.  Cheers

You could borrow AC cables from the Cable Company and try different brands that way.  The rental fee is 10% of the value of the cables, and you can apply that to the cost of any cables you buy from them. They discount some of their cables. I have been very pleased with their customer service, and other Audiogoners have also praised their customer service.

I have been pleased with Cardas AC cables on my preamp and amps.

Based upon the recommendations from @erik_squires (very knowledgeable), I recently purchased a Furman P-2400 AR (the 20A version of his above recommendation) and the Furman PSD 8D, with very good results. 

The 2400 provides voltage regulation, conditioning, surge protection & isolated banks for analog & digital (6 each). I use it for my main components & is full. 

The 8D does everything except voltage regulation, with 4 each isolated banks. I use it for my secondary components (6 of 8 outlets). 
I purchased both for less than $1,000 ($3,800 retail). Highly recommended. 

On upgraded PC’s, never A/B’d, but just bought them… Audioquest NRG Z3 for amp, Y3 for remaining components. Reasonably priced & look good. Don’t know if they improved SQ, but did once buy a Pangea PC that actually degraded sound, so reasonable to assume one would see improvement with the right PC’s. 

One more thing, IMHO isolated banks for your analog & digital components is critical, unless you run two dedicated power lines & 2 separate power conditioners.
When installing my 2400, I accidentally plugged my turntable into the bank I was using for digital, and a digital component into the analog side. It sounded terrible, so I can personally attest to the recommendation to separate analog & digital.

If you’re primarily source is vinyl - did apro do your TT set up? This might be the best value if not.