I'm still waiting for a light weight electric prop. The CF props now made are all too big.
I think the expectation is that if you're a big enough boy to buy a CF prop, then you're perfectly capable of whacking it down and repitching it as necessary. If you don't feel up to it you might be able to talk Alan or Chris into selling you one that's pre-whacked, or getting someone else in the PNW stunt community to do the job for you.
Of course, I think that part of the attraction of tweakable props is that you can tweak them again and again to get exactly the right combination.
The two electrics I now have use a 12-8 prop (the heavy ones). A glo engine of the same power (ST51) would use the same prop, but maybe lower pitch. The electric stunters I have seen (and copied) are not running any smaller props.
If the in-air RPM is inversely proportional to pitch, then your electrics would still be showing less gyroscopic effect. I can't remember if the gyroscopic effect is proportional to the gyro wheel's rotational rate, or that rate squared, but the faster you spin the wheel (propeller, in this case), the more gyroscopic effect you'll experience.