RE: What to do with this engine?
Your Veco .29 will fly a Shoestring just fine, and most of the other ".19 -.35 size" c/l planes. If there is a R/C swap meet coming up near you go searching for a pre-built C/L stunter, I found a Ringmaster at the last one I attended, complete and ready to fly less the engine and tank for $20. A plane like that will give you something to fly while you build the Shoestring or whatever model you decide on. It gets you in the air cheap, and with no emotional attachment from hours of building you can get back to flying the stunts quicker.