Not familiar with your speakers, but if looking for higher power SET amps made in the USA, check out Audio Mirror. I have Vlad's 45 Watt SET monoblocks (more like 50 watts with peaks to 90) driving my 87db main speakers (Eggleston Works Fontaines) in a room larger than yours. Excellent build and SET sound quality is lovely. Also drop-dead gorgeous IMO too. I'd suspect no worries under-driving your speakers.
http://audiomirror.com/amps.html
http://audiomirror.com/amps.html