RE: Will it fly?
Nice going. Congratulations. It is looking pretty good.
I always adjust each engine on a twin or multi-engined plane to run its best, at what it is happiest with for needle valve settings, etc,
As long as the engines aren't too far way from each other RPM-wise, it'll work Ok. it'll just be a little trim adjusment.
Now granted you don't want them way off from each other. But fortunately you have some leeway there.