It's not obsessive, Mike; it keeps you out of trouble and you'll be rewarded with a really smooth running engine. Since you are waiting on bearings and your rods are really heavy you could lighten them a wee bit-
I don't know exactly how much weight was taken off (as with many others, I stole this pic off this big interweb thingy) but I think between the holes and 'shaping' it looks like a fair bit. Along with the lighter flywheel and drilled timing gear I'll bet the thing revs like there's no tomorrow!