Denafrips Pontus 15th, Pass Labs INT-60, and Wilson Sabrinas

No worries on Int-60 power delivery. It’s Pass Labs it will be fine. I mentioned above I was originally driving my Sabrinas with XA30.8. 
But….the more power the better. When you’re ready you can step up to Int-250 or go the separates route. But I really believe you’ll be just fine with the 60. 
I recommend plugging the Pass amp direct to wall. Skip power conditioners. 
Try Audience Forte f3 power cable on the Pass amp. On a cheap side but a very nice improvement over stock. 

How will you know what cables will be best for your system if you are using cheap cables you aren't familiar with? Go with a speaker cable that has a well known character like Cardas Quadlink 5C. Fairly inexpensive used and great to have as a reference. 

Thanks @maprik!! I’ll try my cheap cables and borrow some good ones then compare