5* rank up ⬆️: R5 colossus or r4 AA(then r5 aa)?

Cangaceiro

Both are not duped, I have about 97 Sigs saved I’m just looking for AG… ideally I’d r5 both, but my resources are limited. Should I just add another r4 or r5 colossus?

Xguard77

Unduped colossus is still amazing with the Omega Red synergy