Thanks for all the input. I think I have a pretty good handle on the rest of the design, but will still have an engineer approve it. The customer is a farmer in Wyoming and could not understand how his numerous out-buildings with simple 2x4 gusseted trusses could work, and yet, these trusses needed "help". From my experience, I felt confident that my design (with braces) would work, but needed your opinions to help him see the light. I appreciate that there is more to it than just 1 truss, but this was a design sticking point. If anyone has suggestions on how to make a 34' span with a 4/12 pitch, I'm more than willing to listen. Thanks again for helping me push this customer in the right direction.
John