I believe OP means "discrete components" by "discrete", right?
What is your goal with this
@Quad grant me serenity?
Have you decided you specifically want the old school stand alone component style hi-fi setup?
Or are you more interested in being able to hear the surround sound mixes in their fullest quality and have the most access to being able to play the various digital formats?
If it's the later (listening and format access), using a computer and software media players is magnitudes more bang for the buck. The con might be a little learning curve if you aren't computer comfortable. (Don't need to be "savvy", just "comfortable".)
The stand alone components lead to fussing over formats and connections and maybe even ending up duplicating a few things. HDMI connections are prone to 'copyright gone wild' style silencing of audio even when things are technically connected correctly.
Choose your adventure!
An average computer, a USB connecting audio interface, a small collection of software, and then amps and speakers of your choice goes a long way.