RoA seems like way too risky of an option on vlad since you need to rush it to properly hit your power spike, but rushing catalyst seems suicidal given how piss-weak vlad's early game is and how reliant he is on using revolver to more or less sustain cheese his way out of levels 5-9
vlad's build also isn't that accommodating - CDR boots are core, WotA is core, hourglass is core - and as for the last 3 item slots, i'd much rather have some combo of spirit visage / abyssal / rylai's / luden's / deathcap