@jim94025 I have indirect experience (dealer auditions) with Devore speakers. A close friend has the 845 Premium, as well as LM's 211 amp and their 129 preamp.
The negative feedback setting for the 805ia is a useful function and will make speaker pairing easier, and wider, and more effective performance and preference wise.
The 805ia has more than enough power for your "mod efficient speakers...in a medium sized room"
If you haven't already, take a look at Christiaan Punter's thorough review of four LM integrateds (including the 805) in HiFi-Advice.
A solid choice!!! Good luck.