Speakers for Graaf GM 20 OTL

I am asking for help selecting speakers for my GRAAF GM 20 OTL power amplifier

18 watts

output transformer less 

price was something like 2700 U.S. $ nearly 20 years ago my guess.

monitors or full range.

 In Own 2 subwoofers and equalization units by Velodtne although the subs have auto eq, , app, balanced unprocessed input FOR USE WITH THE EQUALIZERS.

price point? the price AND OR QUALITY of the amps SHOULD rule the class of speakers. 

perhaps 1000 to 3000 but something reasonable.

i have  excellent Audio-GD DAC AND TUBE preamp

thransport so far sony 800mk2 blue ray.

thanks for your interest in helping.

I AM MOVING SO DO NOt know room size but perhaps 15 feet by 20 to 25 feet ceiling may be sloped so larger volume than usual.