Road Bike -> Tri Bike Critique (video)

I'm not a professional, my advice is worth what you pay it.
No joking around (this isn't ST) but your seat looks too high. Are you experiencing any discomfort in the sensitive regions, or having trouble getting in a good spot on the saddle? You could probably bring it down anywhere from 5-10mm from what I see. You should get both power and comfort from that.

I'll make a couple of assumptions -
1) you're making this change to gain speed, not comfort. If comfort were king, you'd ride in road position.
2) Holding 1 constant, you're willing to be mildly uncomfortable to gain aerodynamic speed

It not being a tri bike your position is obviously pretty crunched up and not relaxed, but it *is* more aerodynamic than riding with road bars. I tried the same thing last year using a Cervelo S1 with an Vision TriMax aerobar setup, and I found it was fine for Olympics or less, but really started to hurt my back for anything longer than an hour. As I'm moving up distances, it became necessary to have a properly fit tri bike to hold that aero advantage but have the comfort needed to ride that long. So long as you can hold that position on that bike, there isn't much more you can do to improve it, as it's not designed to be what you're trying to make it. It looks like you're falling off the front of those extensions, but I can't tell for sure because your arm and hand are obscuring them. If it's a J-bend, is it bending down? It should be up. Possibly those could come out a little farther.