Thanks!

I didn't have the budget for new Etap or full DA Di2 here, and piecing everything...man didnt realize how spendy the Di2 wiring bits and pieces were.

Initially i was looking at a budget 6870 approach and hoping to finish the bike with $1600.

Thru a FB group , i came across a great deal i thought, for $1000 shipped for everything below:

The Giant Contact CarbonSaddle
Dura Ace R9150 Shifters
Ultegra R8050 Rear SS
Ultegra Front Mech
All wiring, junction boxes , seat tube battery, charger etc...( ~$350 cost)

At that point i needed a crank. This being a PF30 frame, going with Shimano meant weight and adapters adding further. DA crank raised cost significantly but the weight savings over Ultrgra would be offset by the adapter/BB. Same with Ultegra, putting it over 700grams. Praxis and Rotor also in the 700g range. I wanted something lighter after reducing weight in the trim kit areas.

This mint FSA SLK Light 50/34T 172.5mm crankset showed up a few days later on ebay for $150. Not sure the full weight, but below 600g. I believe in the 570-590g range.