Thanks for mentioning Litepro cranks, yes I have considered the options they provide.
Option 1:
Litepro FanShaped Cranks 366g + Square BB Titanium 170g (lightest I have seen) + my chainring and guard = 670g
Option 2:
(Litepro Cranks + Hollowtech BB) 613g + my chainring and guard = 750g
I think if I am considering a LitePro I'll go with the first option as my goal is to only cut the weight
Did I miss something or is there any tweak for a lighter set?