Support Blitz is the way to go, especially if you have a bursty AD carry (Graves, Corki, Ezreal, etc.)
Mana Blitz just makes you tanky, nothing else. Support Blitz's initiation is just as good as tank Blitz; the only time I'd ever recommend tank Blitz is if the jungler and solo top are both super squishy. AD solotop Blitz is a good troll build, nothing more.
Support Blitz should build Faerie Charm or Boots with wards as a start into Philo/HoG, Shurelya's, Aegis, and then you can choose from stuff like Zeke's, Frozen Heart, etc.