Hey Pop A Molly.. nice avatar lol. I'm gonna try and answer you real quick since I just saw this while I'm at work.
Short answer: No, an AI is not needed for Titanium. While providing a slight boost to testosterone, you will also enjoy the other benefits from the added ingredients including deeper sleep and waking up more relaxed, greater endurance in the gym... and in the bedroom to boot !
ArA is great stacked with GMS... however depending on how much you are taking you'll need more GMS to compliment it with than what HV provides. Something like Glycergrow or even straight GMS from Analyzed Supplements. Combine that with ABE and you'll be solid (in my past experience).