Yours is an enviable situation! 👍
Do you like your Magicos? The speakers are such a key component, and if you like the Magico sound—I heard the A5 at a show, paired with a fine Constellation integrated amp (and Aurender streamer), and the sound was marvelous. So maybe consider upgrading your Magicos? And the integrated you have, or go to separates? Mono amps would allow you short speaker cables (less $$) if the amps are placed by the speakers, but it means more boxes.
Magico A5 review - AbSound
I love the Constellation integrated, but maybe yours is good still. Others: The ModWright KWH225i has a tube preamp stage and is sweet, and so is the AESTHETIX Mimas (also a tube pre stage) (Mimas). Both have enough power to drives the Magicos— approximately twice the power of your very nice Luxman (Luxman review)
If you do, I think you can do MUCH better with new speaker cables, like the AQ Mythical creatures series. Your system now is better than the Rocket 88s...a weak link maybe.
I’m not an analog guy (and maybe your analog rig needs no changes?). If you spend a lot of time listening to your CDs, I would say you definitely should invest in a good DAC, if you are using the one internal to your CD player. Do a search here...that is a whole ’nuther kettle of fish! You can easily spend $10-20k on a DAC if you go wild, but whether you need to, I can’t say. Maybe look for used deal?
Don’t rule out streaming ... it is amazing. I listen via Tidal using ROON (which I love dearly), using a Small Green Computers Roon server (all my CDs are ripped and stored on it too) and Sonore microRendu streamer. Trust me—streaming will blow your mind when you see how much music you will discover or re-discover via streaming and Roon. Aurender makes streamers that have a very good operating app too.
I think you can do many upgrades and even have money left over! Have fun!