So, it's done. Decided to upgrade rather than replace. Clearance sales and eBay provided with some good deals on components and ultimately spent much much less than the cost of a 105 groupset. Forte brifters and rear derailleur, SRAM Force compact crankset with SRAM GXP bottom bracket, and an Origin8 Ultim8 stem and Origin8 headset (had a Ritchey headset but it was damaged from the factory).

I still got 22lbs though, which doesn't make sense unless I weighed it wrong the first time. I pulled off a 12+ year old 105 triple and 105 long cage rear derailleur to be replace by the Force and Forte. The crankset swap out alone should have dropped some noticeable weight. And the Forte brifters are lighter than current 105. Oh well.

So, I now have a ridable bike again.

Thanks for all the input. BF provided a lot of good info.