How big is this plane? I think either will work for a 40 to 1.20 sized plane...

The key to having a straight pushrod will be mouting the control horn with a twist so that the pushrod does not bind.

If you decide to bend the push rod so the control horn is square to the rudder then make sure the bend does note prevent full control throw. If the bend is too close to the fuselage it may the pushrod exit...