Engine Rebuild

Well it is that time...
 
Has anyone done a engine rebuild on the 96 4.3L vin-W engines? Need to know if it is easier buying the rebuild kit or buying in parts... this is an idea of what i am looking for...
 
http://www.rpmmachine.com/shop/html/Chevrolet-262LX-4.3L1996-2002-Vin-W-and-X-With-Balance-Shaft-Economy-Engine-Rebuild-Kit.html
 
Also if the heads need to be bored out, what would be good size to bore the cylinders? also should i stay at the standard size for the rod and main berings or should i go bigger?
 
I will take any and all advice, suggestions etc

I rebuilt mine. We decided not to bore anything but we did do a polish on the heads and crank with heavy duty crack bearings.