.
My scalish Dr-1 has postive incidence in the stabiliizer. And it needs it!
The top wing is seriously above the vertical c.g., and creates a nose-up pitch.
The full-scale has the same problem. The pilot has to hold down elevator in level flight.
For scale, it's best to use what the full-scale has.
For a manuverer, keep it simple, and trim the elevator to suit.
And expect LOTS of drag! Dead stick landings will be fast!