We are starting to play odd gigs and we need some form of PA and I'm thinking of buying something - but funds are limited!

Is the following likely to be of any use - Wharfedale PA

It's the sort of order of money I have to spend.

Line up is probably -

* 3 mics for singing
* Two or three acoustic guitars (which I presume I could put straight in from pickup)
* Also play bass but would probably do that separately through bass amp
* Might have an electric guitar also (I might take an emulated line out of a small 15 watt amp and pop it through the PA I presume that would be feasible?)
* I thought that a minimum of 6 channels needed

First gig is going to be outside in a courtyard for about 30-40 people
and doesn't need to be very loud - could almost play acoustically I would guess but think amplification would help

In the future we might also do the odd small village hall or room in pub and we do have a more electric band who play stuff like this.

Is this enough or is it underpowered?

Any alternatives given the limited funds and what we want to do?

Thanks for the help in advance. We play on August 7 so time is a bit against me!