This is my configuration A - Speed [Nova].
[Power Donation] is here for a reason... on mission you will got only 10% Strength which will speed up enemies affected by Molecular Prime skill by 60%.
Exilus is absolutely optional (note that [Coaction Drift] does not work with [Power Donation]). I putted there [Preparation] but you can put there whatever you want.
[Molecular Fission] augment mod is here to help you gain damage reduction from Null Star skill.
Suggested arcanes are Energize & [Guardian].