What is your carrier?
Depending on the viscosity of your carrier the BB may or may not be needed.
As for your additional components:
Adding more BA will put you at a high Preservative concentrate. Re-consider adding more oil and less BA. At 200ml with tren ace, my BA is only 1.5% (3mls)
BB-this is a thinner and more of a solvent, not a presertative, honestly I don't know why everyone uses it with every recipe..maybe they like scar tissue?
You do not need any additional BB unless your using a thicker oil. Sesame, cottonseed, MCT, Guac/EO mix that's where BB is really helpful.
Me personally, I want 100mg/ml tren ace..powderful, less injections and I use up my oxygen tanks after injection from coughing my ass off. lol