Manual disc brakes vs power disc brakes questions

Thank you to everybody who responded to this thread. This helps me with my diet plan for my 67 barracuda. So far my math shows as this.

Dry shipping weight 1967 notchback sport coupe with V8 2,855 lbs

Top off all fluids including fuel
3,016 lbs

I removed , power brakes, oem starter, oem alternator, iron heads, iron intake, copper brass radiator, iron bell housing, iron cased A833 gear box. 459.53 lbs

Add manual brake lightweight MC, denso starter, denso mini alt, aluminum heads, aluminum intake, aluminum radiator, aluminum bellhousing, aluminum cased A833 O/D. 234.4lbs

The net difference puts me at 2792 lbs with all fluid capacities full.

This figure doesnt take into concideration that i added disc brakes which are heavier than the front drums, will be adding a 1&1/4" hollow swaybar on the front, and a solid 7/8 sway bar on the rear, subframe connectors, four 1/8" thick torque box plates, beefier 2×3 boxed lower radiator support, and caltracs. In this regard the weights gonna go back up maybe 50-75 lbs i'm thinking.

I am also thinking of ditching the lead acid battery for Li battery once pricing comes down. I can drop off roughly 45lbs, for a 5 lb Li battery a net weight savings of 40 lbs.

Although i do have a spare manual box, I dont plan on ditching the power steering as i'm using C body pitman and idler arms for a faster ratio, and will be dialing down the pressure in the pump for a better road feel. I may go with a lighter borgeson power steering box later.