DH88 Comet
Rude One:
My best flying scratch twin has all incidences set to zero, and the engine thrust lines are 0-0-0. With no washout on the wings. This gives me maximum maneuverability, no change flying right side up or inverted.
The Duellist 2/40 (I have two) is also a very nice flying twin. On the Duellist the wing and stab are both two degrees positive, the engines have seven degrees down thrust (no side thrust), and the wing has two degrees washout at the tips.
Joe Bridi agrees with my set up, everything at zero, but Dave Platt designed the Duellist and his set up works very well also.
Many people swear by out thrust on twins as well. If this is your first twin I'll go along with out thrust: Three degrees out (right) on the right engine, and one degree left on the left engine. Difference is due to engine torque.
What I'm attempting (poorly) to say is that the plane will fly regardless of the angles if it's done well. Build it per the plans, except maybe add some washout if you wish. Or fly as I do, and avoid slowing to stall speed unless you want it to stall.
Build the giant deHavilland twin, no money left for food - you'll stay thin.
Bill.