You could do a two step starter. 1 vial into 1 Liter, let it finish and chill for 2 days and decant. Add another ~2.87 liters, let it finish, chill it, decant and pitch. That'll get you 523 billion cells which I think is close to what you need without knowing what numbers you are using.
Next: Egregious inspired beer
Fermenting: Barrel Fermented Dreg Lambic, Brett Trois Helles, Carrot Blossom Cedar Mead
Drinking: RIS, Coffee RIS, Jalapeno RIS, Heavy Hopper v2, Dusseldorf Altbier v5, Oktoberfest v5, Dopplebock v2, Cider, Rye Berliner Weisse, Sauerkraut Fermented Gose, Lambic, Brett Trois IPA, Brett Blonde, Kriek, Saison, Sour Blonde, RIS
Barrel aged: RIS, Rye Barleywine, Tripel