William Wynne also has, Corvair College, you can learn everything you need to know . I think his web site is, FlyCorvair.I like the vairs a lot. I have one about ready to put together. A must have is William Wynnes conversion manual. Contains many many years of what works and what does not. He sells a bunch of parts for conversion that you may be able to fab on your own. The real must haves are the fifth bearing, Prop hub And maybe the distributER. The things like the starter conversion, alt bracket, intake and exhaust are pretty DIYable (especially for you).
The fifth bearing pretty much eliminated crank breakage. That was the last piece of the puzzle that really makes the vair a very nice AC engine. Total weight should be around 220lbs. If that engine weight works for the baby ace, I say go for it!