What's your budget?

What brand transmitter & receiver?

I'll give you what I would consider adequate in that model.

I like the coreless Futaba S9202 (76 oz-in torque) as a good strength to cost ratio for rudder and elevator, but many giant scale fliers won't go "non-digital" and the fast and furious 3-D flyers think they are way too slow. In a scale WWI biplane they will be more than scale speed responsive.

You could get by with S9001 (54 oz-in torque) on the ailerons (two servos).

You don't need HD servos for the throttle and I opt for S3001 in that duty.

That's what I'd put in her. But then, I'm frugal. Put in a second 1500 mah battery pack and switch and you're set.