potato isos

[DvB]

I was going to burn myself a copy of potato to see how much the 
install's improved since I last ran it and noticed there are not one, 
not two, but _three_ freaking iso images (binary-i386-1 thru 3.iso) out 
there. Are they all really necessary? Or can I install off one and add 
packages via apt as I need them...
TIA