Should I make any changes?

Sonic Frontiers made really good sounding gear. But…keeping the Iris is a risk. If it breaks you will most likely not be able to fix it due to unavailability of parts. 
I’m with @ghdprentice on starting to shift towards streaming. You can begin the process by upgrading the DAC to a unit that includes a network card. With $3k - $4k budget you can definitely get something really nice on a used market. Keep the SF transport to spin CDs until it dies or sell it to add funds to the streaming setup purchase. 

I regret selling my Theta Casanova when I did.  I should have kept it for much longer, and if HDMI was a real option I would have.  In other words, don’t "trade up" unless you know it’s actually a trade up for you.  It’s good to get suggestions, but make sure you listen for yourself first. 

I’d consider room acoustics if you haven’t already, especially in a new space.  They can make speakers sound much larger by taming excess mid-treble energy and smoothing out the bass. 

The one thing I'd strongly urge you to add if you havent' already though is a streamer.  Access to unlimited libraries of Jazz, Classical plus online radio like Jazz.FM is priceless.

The teac 700 series cd is great has the famous transport like esoteric and a dac.there about 4 k. They also sell a clock you could get latter. I like mine and also have the luxman d 10 x and others. I think it cost 30 to 60 k to get better and at this point don't think it's worth it. Teac builds great stuff and has a service center in usa.if you have alot of cd s I would do it.happy hunting.

As others have posted, maybe it's time to move to streaming. If you do have a large collection and would not like to change, then my thought is a better DAC.

Holo May, Denafrips and Laiv Harmony are DACS that come to mind

if you wish to enter streaming, I highly recommend Eversolo as a starting point

Good luck

At 1.4k, the Advanced Paris X-CD9 CD player got a Stereophile positive review in their Jan2026 issue.