IR's multiple build thread.

Judging by pic, and everybody is different, and you won't know until on track, pic may be crap etc...

...suck your belly in a bit more and rotate hip bones rearward. Reaching with hip bones forward isn't optimal for comfort/balance/power.

In my experience. If I am wrong no doubt tester will be auto-summoned to this thread :)

People get back pain if the curve over their back isn't smooth.

So to stay aero and comfortable closing that hip angle is the way. Or sack off aero, go for power and stay upright. Both work.

IMHO etc, etc.

stop worrying about how aero you are and find a comfortable position that you can pedal hard in. Do not over think this shit.
When you start racing and are losing sprints by half a wheel you can begin looking for marginal gains.

Also a position you can pedal fast in.

I have to come up a bit to hold the highest cadence.

IMHO etc, blah...