Speakers for restaurant

Hi all:
i recently purchased two Sound Acoustics c-8240 commercial mixer amplifiers from a restaurant that went out of business and am now getting ready to use one (or both if necessary) for a small restaurant we are moving into and renovating. There are basically two areas. One large 30x30 dining room with 16 foot ceilings and a 26x26 patio outside. We will only require the system to play background music and the occasional louder catering events (staff parties) and I would like to find out what speakers I should buy for both areas.  I am planning to run 12 gauge speaker wire (as this is what I have from another Reno) but am at a bit of a loss to pick some reasonably priced decent speakers. Any help will be greatly appreciated 
thanks,
Erik from Perth, Ontario, Canada