I would agree - try it with your electric first and see how it fits in.
However,for acoustic type gigs I always use my Washburn AB20. Fitted with bronzewound strings,
it has a great tone for complementing the other instruments, and yet is very controllable. I think it
sounds fine (I plug it directly into the PA) , and it gets favourable comments from musos/punters too.
They can be had for around £200 s/h, and well worth the dosh IMO. Also worth a look in the same
price bracket is the Takamine EG512C, which again is a nice bass for the money.