I've had dealers let me give them my card as security and then try the gear in my home. If you like the preamp and speakers, then at the very least, you need to keep those variables stable. Keeping an open mind is fine if you want to find yourself talking about a much more expansive purpose, but otherwise, you want to at least have a portion of your listening experience be of the the single new piece of gear, right? Nothing to prevent you from moving on after that, but you'd have a baseline you wouldn't otherwise had.
This is expensive stuff and there'd be less reason to second guess yourself if you put the effort in on the front end.
This is expensive stuff and there'd be less reason to second guess yourself if you put the effort in on the front end.