The Super 7 looks very interesting indeed! I have a few questions regarding the upper part kit (i.e., without servo subs) that I hope you will respond to:
It would be really tough to make the upper section work without the servo subs. It will require drivers fast enough to match with the speed of the planars. Certainly no large diameter drivers are going to do that without servo control.
1. What are the crossover point and slope(s) between the mid/high section?
Second order, 180Hz range.
2. What high-pass (frequency and slope) do you recommend for the Neo 10s, and is this included?
Ideally just use an inline filter using a single capacitor prior to your amplifier. This keeps the cap value really small (less expensive) and it will have less adverse effect. The cap value needed will depend on the input impedance of your amp.
With small wattage amps you don't need to use any high pass filter at all.
3. Can you use active filters for the high-pass to the Neo 10s? (i.e. no caps used)
I would avoid any electronic style filters that put additional parts and A/C noise into the signal path.
4. What low-pass slope for the bass section should they be parred with (assuming a bass section that does not roll of by itself until further up the frequency band)
The servo subs and servo amp will do it all. There is a LOT of flexibility there that allow the drivers to blend, plus EQ of the woofer section to help control room issues.
Trying to blend the upper to anything else would be tough.
5. What is the sensitivity and power handling of the upper part section?
Sensitivity is 97db. And unless you need for your ears to bleed you won't ever need near enough power to stress the drivers.