If you can, stick to your guns and stay with the separates. Spend a bit more time looking at the speakers you might choose and basically forget about those power cables for the moment, :"You may want Join a cable library", to help you get a feel for what cable types and materials, connectors and adaptors will work best. Both with the gear and your personal taste in listening. Just find some basic but decently made speaker and interconnect cabling to start. Possibly even making your own speaker cabling to learn a bit about the subject, "If you happen to be handy like that",
The most important thing "IMHO", would be to get you to understand the importance of letting the system "And yourself", evolve as you go. Instead of having a list already "Finalized" and ordering it all at once .Which may be a recipe for disaster. "And thinking that your done". Remember, 2/3rd's of the fun is in the "Journey" of this hobby. Again, this is simply my humble opinion.
Regardless; "Have Fun" with the entirety of it!
The most important thing "IMHO", would be to get you to understand the importance of letting the system "And yourself", evolve as you go. Instead of having a list already "Finalized" and ordering it all at once .Which may be a recipe for disaster. "And thinking that your done". Remember, 2/3rd's of the fun is in the "Journey" of this hobby. Again, this is simply my humble opinion.
Regardless; "Have Fun" with the entirety of it!