Almost ready to expand

I'm almost ready to expand my pond.
On April I will start on my hole. The new pond will be 15x15 and 4 ft deep.
I got my liner in. I got my pump. Its a Sequence External Self Priming
Series
The flow rate is 1500 - 5400 G.P.H.
I'm going to have two bottom drains. I ordered Greg's CD to show me how to
do this.
I'm go have a settlement pond behind the big one with filter mat in it and
hide that with plants.
I'm still debating if I will have a waterfall. Don't really know how to make
one.
Oh yeah, I want a skimmer also.
Does all this sound good?
I want this one to be the last hole I dig.
I have Koi, Shubunkins, comets and sarassa's.
Priss
http://priss31.tripod.com/SmallPond.html