While not a Jet, it was suggested I throw this out here to you guys.

I'm building a 30% scale model of a Piper Cherokee 180 based on the Hostetler plans for the 140. The trick is the real one has a Stabilator or Flying Stab which I want to replicate but Hostetler does not show in the plans. So to that end I'm looking for advice/suggestions as to:
Constructing the pivot so it's solid, serviceable and as light as possible for this size model?
Where to get the parts?
To counter balance or not?
What size servo you guys might recommend for this? Currently considering going with 200 ounce.

Here are the specs for the stab and some basics for the model itself.

Stab:
Simple, straight constant cord fully symmetrical.
36 inches span
9 inches cord
TE of stab has an anti-servo tab (included in above measurements) which travels in the same direction as the stab itself. Just further. It is 1.5 inches wide by 33 inches long.
The stab will rotate a max of 15 degrees up from neutral. Down will be much less but I never really had trouble getting one to come down.
Pivot point is located at the 28% point of the cord. Basically it's on the front side of the box spar.
There is also a counter weight that sticks out from the center of the front of the stab into the fuselage. The stab is then balanced 100% statically. Don't know if I'll use that or not.
Fuselage cross section at the pivot is 2 inches wide by 5 inches tall. Should be enough room. Fuselage behind the pivot will be a two piece, top & bottom fiberglass tail cone.
Right now the plan is for the stab to be a single piece. Attaching/detaching through the removal of the glass tail cone. However, the idea of a 2 or even 3 part stab is a consideration. Plug in outer panels either to each other (2 piece) or to a semi-fixed center section (3 piece). But being in the tail, weight is a consideration and the one piece might be the lightest of the bunch.

The model has a 108 wingspan and will weigh in the neighborhood of 30 pounds and hopefully, less.
Current power choice is the OS 320 Pegasus.
The model will be sub-sonic! Anticipated speed of 65 mph max.

So, with the experience in flying stabs on jets, what can you guys suggest? Here are some pics of the real deal and model plans of one and the way someone else did their Hostetler Cherokee.

Thanks All!