Purchasing new band PA

I have a vocal group that has added a drummer and a bass player.  We
are going to be playing outside to a small crowd or in small to
medium
indoor venues.  I have a Fender 410 Deville Amp that will put out a
lot of sound and a smaller Fender combo bass cabinet.   My PA that I
have been using is just a four channel Kustom 100 watt for the vocals
only.   I need something bigger with the other instruments.

Here is what I am trying to decide on.


Soundcraft 1000 watt powered mixer 499.99 with two Harbinger Speakers
299.99 each.
Pros:  Easy to use and carry
Cons: The powered mixer cannot be expanded.  I was told that there is
a greater likelihood of it getting damaged with it being carried
around.


Yamaha twelve channel mixer 499.99 with a crown 300 watt (per
speaker)
power amp 299.99 with the Harbinger or JBL speakers 299.99 each.
Around 1400.00.


Pros:  It is expandable, these will fit in a rack mount that will aid
the ****tability of it.  I could easily upgrade the unit.
Cons:  A little more cost.  A little more bulky to carry around.


Another suggestion would be to purchase powered speakers with a
mixer.


What are your thoughts.


Thanks

I have a few songs at www.soundclick.com/lostinsinsingers

James