At my club, I can recall a member who built a Top-Flite Giant Mustang, detailed right down to the rivet details, and a top-notch paint job. I believe that is his third plane. Before that, he has flown a Sig Four-Star. He has been in the hobby for the last couple years, and has accumulated quite a bit of flying time. So, I don't think the Zero would be an unrealistic goal as a third plane. Do keep in mind that it will likely have higher wingloading, and a higher stall speed than your Cherokee. Will this also be your first taildragger? If so, then you might appreciate some help from a buddy with warbird experience on your first takeoffs to minimize the risk of a ground loop, or getting airborne too early and tip stalling. His advice may also help you avoid the flipper landings and bad-approach cartwheels that these planes can be susceptible to. Once you get used to all that, you're good to go!

NorfolkSouthern