ebay is your friend. i just had a browse , there are 100's of complete set ups for sale.
if its a small to medium place i would go for 300w 12 or 15" full range speakers with a 1000w amp. ( lots of tech issues regarding output/ohms etc ). the amp needs to deliver a lot more output than the rated wattage of the speakers, not the other way around as people think!
the 15" drivers will give you the bass response. a good pair of 12's will suffice in a very small place.... (the Robin Hood , Edwinstowe copes very well with 12" drivers). please bear in mind if you require a huge amount bass response, the amp/speakers need to move a lot of air, therefore, large set up is favourite. my old band used 15" spkrs with a 1000w power amp and never suffered with volume issues at any gig we ever did.
hope this helps, remember, its better to have plenty in reserve rather than pushing a system to its limit.
p.s. www.class-d.com are based in mansfield woodhouse, very knowledgable guys and ultra cheap reliable stuff. i would recommend , bought lots of gear off them in the past.
the amp needs to deliver a lot more output than the rated wattage of the speakers, not the other way around as people think!
Is this true? I've got 2 whopping amps, but never dared to use them as they are much bigger output than my speakers.