What you need to do is grab an amp from Class D Audio to drive them until you can detetmine what you need. You can get one for $600-$700, or so, which will drive them very well, until you complete your search.
I’m using the SDS 370 which drives my new LRS+ about as well as they can be driven - and the sound is sublime - in all respects. And it only cost me $700 - new! It has all the power you need. And will let you enjoy them at their best until you decide what to do.
Classdaudio.com
Or - just go directly to the Sanders Magtech!