Noob here as you can see. I just got the HK AVR254, great receiver. Currently, I have the Klipsch 5.1 Ultras computer speakers hooked up to it for the moment. It will hold me over until I can get some new speakers. What do you guys recommend? Below are some details.

Room is 12x14
Must be small enough to mount on wall.
Budget is about $500

Also, What gauge wires should I use? Thanks a bunch.

Energy C-50s are wall mountable.
http://www.wwstereo.com/default.aspx#/ecommerce/store/Speakers/33/144824/9_2_-1_84__0_0_0_-1/

Energy V8 subwoofer would be good to mate with them.
http://www.wwstereo.com/default.aspx#/ecommerce/store/Speakers/33/144660/9_2_-1_84__0_0_0_-1/

total will be right at $500.

Polk Monitor 30s can be wall mounted also, they come with keyhole brackets.
http://www.newegg.com/Product/Product.aspx?Item=N82E16882290094

14ga speaker wire is generally fine.
http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10239&cs_id=1023902&p_id=2791&seq=1&format=2

Thanks for your suggestions!