adding a DAC/Streamer or what

Knowing a budget would be helpful.
Node2 has a DAC which you won’t be using, but it’s still a good introduction to streaming.  It has one of the better software packages, which is very important in streaming, and it’s a good enough streamer that many people never feel the need to upgrade. It also does Bluetooth.
Many people don’t find the DAC to be adequate, but some find it sufficient.  One suggestion would be to see what return policy the dealer has.  If he will give you a few weeks then purchase the Node2 and the Chord.  Try the Node2 first by itself for a few days and then add the Chord.  If the Node2 is adequate return the Chord, and if you later hunker for an upgrade, there are many fine DACs in every price range, or just purchase the Chord.  Later on you may feel the need to change the streamer and at least the Node2 is a relatively small investment.
  Another option is to purchase the DAC and try it with a PC for a while before deciding if you need a streamer.

I am thinking of spending under 10K for both items together. Your thoughts?

There are tons of great DACs and streamers. I of course like the brands and models that we've chosen to carry, as well as many others that we don't carry.

In addition to the budget, it would also help to know what kind of sound character you're looking for. We can make a guess based on your choice of KEF Reference 5 and Pass Labs INT-250, but maybe picking gear that also provides a similar sound would be pushing you too far in one direction, and you'd instead prefer adding more neutral gear. ???

What sound qualities are you looking for and are most important to you?

10K is a healthy amount of samolians to heave at this issue.  Still, I recommend being cost effective, in case you want to upgrade.
As indicated earlier I would buy a great DAC and start with a budget streamer, possibly even a PC.  With that budget I would do something much better than the Chord.  So ask yourself what features you want in a DAC.  I use a Bryson DAC3, which besides being a great DAC, as 4 HDMI inputs.  I have many Blu Rays/DVD-A and Blu Rays and the DSD and other high res formats can be sent to the DAC over HDMI (a television can also outputHDMI).  Perhaps this HDMI feature has zero relevance for you, but the Bryson at about 3.5K is still a great DAC.  The Bryston USB inputs are not inferior to their other digital inputs.  Many DACs have an Achilles Heel and that is unacceptable, because many streamers only stream over usb.  I have also owned the Mytek Manhattan, which has no HDMI but retrieves an unbelievable amount of detail.
  Anyway, I would spend 3-5K on a killer DAC, and start slow on the streamer.  A PC optimized with a program such as Audirvana Plus or the Bluesound Node2i.
Another 1-2 K on  a NAS (Synology or perhaps a Melco  N100) if you have a big CD collection to convert to streaming files