Advise on 845 Set amp and Speakers to match.

I would like to purchase a used second system consisting of a low powered 845 SET amp along with matching high efficiency monitor speakers. My room is approximately 10 x 14. Being that this would be my 1st SET amp I was hoping to get some feedback from people who have this type of setup. Currently I have Nautilus 805 in this room but I doubt they would work properly with a SET amp.

Thanks for any advise,
Steve