It is good that you took the time to learn what was really causing your problems
Now go out and drive it before changing the plugs, they should clean up real well unless they are fouled bad enough that they miss all the time Drive it like a non hot rodder for the first ten to fifteen minutes to allow the gunk to burn off the plugs and then, in a safe place, get after that rascal with full throttle
Let us know how it drives now