Do you have plans on your future DAC? If you are just using the HiFiBerry as DAC, it may be extremely challenging to plan the proper preamp. In my experience, a preamp is just another tool in shaping the sound from the source.
You went towards a Bryston preamp. This is definitely on solid state side (no Class A, no tube). You are going to want to put some sort of tube or Class A device in your originating equipment. Your HiFi Berry is probably going to put out very weak sound - there is really no power supply capability in this - I think everything runs off USB power or similar. There is no beefy power supply to push bass/midbass weight or punch. I would suspect the sound is very thin. A powerful preamp may help translate more bass, but it will not change the source waveforms much. The type of DAC may influence the type of preamp you’re after. For the HiFi berry or a different solid-state type DAC, I might look at the BAT preamps because of bass translation (BAT is very good at bass). If you are getting a tube DAC, I would lean towards a very solid state preamp - like a Krell or even a Wyred 4 Sound STP-SE (which is almost like a passive preamp with gain voltage).
Most of your suggested preamps are seriously old school. The Krell is from 1992. Most of this stuff will have to be re-capped (electrolytic caps) for them to perform well. From the list, I would probably pick the Conrad Johnson just because of age. Though, if you tried to find a Krell KRC-3 or KRC-HR and then re-cap, that might be extremely nice.