My measurements are 34'', 26'', 35''. 5'11'' tall. Is this suitable for catwalk/editorial modeling?

Your bust and hips are fine, if anything they may ask you to lose 1" off your waist, but that's not a guarantee if you have a great face. 5'11" is fine for catwalk/editorial. There are plenty of models who are 6' or taller but often lie to say they are 5'11"