I believe the getting the push rod a s close to 90 with the servo AND the control horn is the way to go. Do some snooping on the helicopter sites and you will see how its done on that side of the fence.
Go here...
http://www.helifreak.com/showthread.php?t=41692
Watch the CCPM set up to see how complex it can get.
I've been there and done that so airplane set up is a breeze!!
There is a lot of good info in that thread. Some good radio reviews, while biased towards heli's still good reviews. Some neat stuff like the CSM carb smart that has applications in planes also. LOTS of good info on electric too, batteries, charging and such.
Ken