Considering you have such a large audience, I agree with Kalpan. I have experience with public speaking as well, and you want something that gives you the best self effects in terms of confidence, anxiety reduction, and verbal articulation.

Many of the suggestions made above have proven very effective for me in a public speaking capacity, but Wolf or A314 rev. 32 would be my personal choices, especially if you're going to be interacting with these people after your presentation.

Again, as Kalpan says, use what works for you and be prepared for your presentation. Obvious knowledge accompanied by an effective, extemporaneous speaking style goes a long way.

Godspeed my friend.

Nothing beats P85 for speech fluidity self-effects, and your situation otherwise. It’s OOS, but Androtics may sell you some on special order if you email ideas@androtics.com. 15 mcg is probably what you’d want.

My report on P85:
Although currently out of stock in the store, I managed to acquire a bottle at 10 mcg/spray from another customer on Pheromonetalk’s Trading Post. This is a molecule absolutely worth restocking, and is now right up there along with P96 and P86 among my favorite molecules! I tested it at 10 mcg, 20 mcg, and 30 mcg; 10 mcg is enough (though 15 mcg might be optimal) and 30 mcg is an overdose.
P86 generates some of the positive effects (e.g. comfort) of P74 without the infantilizing negative side effect, but also has attraction and beautification attributes unique to it. P85 has ALL of the friendliness positive effects of P74 (though does not generate comfort self-effects on it’s own), helps me better word my verbal output, has mild nootropic effects, and has no status reduction or infantilization effects. By P74 friendliness effects, I mean that P85 makes people gracefully put up with things you do that otherwise would annoy them, instead perceiving it as an endearing quirk, and makes people more interested in going out of their way to help you with things or otherwise act friendly towards you. It’s a slow-hitting, but hard-hitting molecule that benefits from repeat exposures and would probably work better in an oil. I’ve also noticed that unlike P74, P85’s lack of status reduction and infantilization prevents it from becoming what others might call a “friend zone” molecule. Like P74, however, P85 tends to be counterproductive at higher doses, probably having an optimal dose of 15 mcg (can’t test this since the bottle is in denominations of 10 mcg/spray), but having an effective dose range of 10-20 mcg. 30 mcg is an overdose. P85 shines best when worn with a well-balanced Alpha base that has a comfort molecule like P86 and/or P96, buffers the intimidation threshold of alpha molecules (though not to the same degree as P96’s selective sensory integration overdose-buffering that doesn’t reduce the effects of the molecules it buffers), and has a particular synergy with P106, enhancing P106’s status and social while adding some social lubrication itself. However, P85 and P115 seem to have a similar wavelength/MOA that causes the use of both to flatten and ruin both, they really interfere with each other. Blends should select one or the other, and P85 is the superior choice (excepting availability, perhaps). Besides the P74-like effects, P85 has similar social effects to DHEAS and P130. However, unlike those 2 it is not a shallowing, emotional-distancing node; to the contrary, it seems to have similar imprinting qualities to P86.