Twin engines never approach slow. Blue line in the Baron is around 100 kts. Try to maintain that speed until short final, then start retarding the power gently, aiming to cross runway threshold around 90 kts, slow the speed to touch down around red line (Vmca). That´s how a real twin engine lands.
You can approach less than blue line, POH says that, but think there is no need to be less than blue line in case of an engine failure if you are more than 3 nm away.
Approach at 90 kts is ok if you like.