Anyway - would like to thank you all for your help / advice / critisicm as if I hadn't come on here I think I would have been stuck with a half hearted PA system.
Thanks again
Thanks for taking all of the comments in the spirit they were intended.
For every one person who actually listens to the advice, there are ten that don't and end up with something that is not satisfying.
You will be able to accomplish quite a bit with your new speakers, as you have discovered.
I purchased my first PA with my friends when I was 17. I am now over 50 and have learned that it is often better to "buy once, and cry once" as others have said.
Cheers,
Michael