Think beyond sound, ask yourself if you can live with the functionality.
A few years ago I had a cheap NAD DVD player and the sound wasn't as good as from my slightly more expensive NAD CD player. It was probably an inferior DAC in the DVD player. OK you might get round that with an external DAC, but, also, the functionality of the DVD player was irritating - needed to control it from the TV screen, slow to load, noisy, nasty plastic feel, too light, overly complicated to operate, bad remote,...
Chceck out all reviews, then audition it in a store and play with the controls, load CDs, check out the remote and control buttons. Ask yourself if anything seems irritating.
Do you really need RCA from the CD player? Why not get RCA exclusively from the DAC? As you are planning an external DAC, why not get a transport like the
Cambridge Audio CXC? (Note I haven't checked this in store. At first sight, it looks good and generally gets good reviews... but I'd check it out in store before purchase...)
https://www.richersounds.com/cambridge-audio-cxc-lunar-grey-in-store-clearance/
P.S. A reviewer dissed the main competition to the CXC for having a really irritating stop & eject button - watch out for that kind of comment in reviews! Check out the irritation in the store to see if it irritates you (the reviewer might be all thumbs or his particular transport might be faulty...