I had a C47 for a couple of years and just sold it. Nice sound, very nice dual phono preamp too. The dac was average compared to my standalone dac so I never used it.
If you are getting the C53 mainly for the equalizer, go for it, but I would not get it for the upgradeable dac. Most dacs included in integrateds and in preamps are not as good as a standalone dac from the same vendor. Also, I use Roon and the C47 had a weird way they implemented Roon. I also don't like equipment that has replaceable boards, that just means you will be constantly spending $$$ for upgrades.
For your dac, get a FPGA type dac with a network interface and you won't be on the constant upgrade merry go round. If your dac has a network interface and if you have Roon, you can eliminate your bluesound streamer which IMO is your weak link in your system. Roon will use the dacs network interface as an endpoint and the pc/Mac running Roon can be in a different room
If you are getting the C53 mainly for the equalizer, go for it, but I would not get it for the upgradeable dac. Most dacs included in integrateds and in preamps are not as good as a standalone dac from the same vendor. Also, I use Roon and the C47 had a weird way they implemented Roon. I also don't like equipment that has replaceable boards, that just means you will be constantly spending $$$ for upgrades.
For your dac, get a FPGA type dac with a network interface and you won't be on the constant upgrade merry go round. If your dac has a network interface and if you have Roon, you can eliminate your bluesound streamer which IMO is your weak link in your system. Roon will use the dacs network interface as an endpoint and the pc/Mac running Roon can be in a different room